共用题干What's Killing the BatsFirst it was bees.Now it is bats.Biologists in America are working hard to discover the cause of the mysterious deaths of tens of thousands of bats in the northeastern part of the country.Most of the bats affected are the common little brown bats(Myotis lucifugus,)but other species, such as the long-eared bat,the small-footed bat,the eastern pipistrelle,and the Indiana bat have also been affected. In some caves,more than 90 percent of the bat populations have died.One possibility is disease. A white fungus（真菌）known as fusarium has been found on the noses of both living and dead bats.However,scientists don't know if the fungus is the primary cause of death,a secondary cause of death,or not a cause at all,but the result of some other conditions.Another possible cause is a lack of food.For example,bats typically eat a large number of moths（蛾）,and in some states such as New York,the number of moths has been declining in recent years. if bats can't eat enough food,they starve to death.Still other scientists believe that global warming is to blame.Warmer temperatures in recent years have been waking up hibernating（冬眠）bats earlier than usual. If bats break their hiberna- lion at the wrong time,they might not find their expected food sources. The weather might also turn cold again and weaken or kill the bats.Scientists might not agree on the causes of the bat die-off, but they do agree on the conse- quences. Bats are an important predator of mosquitoes:a single brown bat can eat 1,000 or more insects in an hour. They also eat beetles and other insects that damage plant crops.If there aren't enough bats,damage will be great from the insects they eat. While bats live a long time for their size-the little brown bat can live for more than 30 years-a female bat has only one baby per year,so bat populations grow slowly. Many bat species in the United States are already protected or endangered.How can you help?Do not disturb sleeping or nesting bats.If you discover bats that seem to be sick or that are dead,contact your local Fish& Wildlife Department with the details.However, be careful not to touch the animals. What is the main idea of this passage?A: All species of bats in North America are dying.B: Scientists already know the cause of the deaths of bats.C: The bat deaths are a serious problem.D: There are many possible causes of the deaths of bats.
共用题干
What's Killing the Bats
First it was bees.Now it is bats.Biologists in America are working hard to discover the cause of the mysterious deaths of tens of thousands of bats in the northeastern part of the country.
Most of the bats affected are the common little brown bats(Myotis lucifugus,)but other species, such as the long-eared bat,the small-footed bat,the eastern pipistrelle,and the Indiana bat have also been affected. In some caves,more than 90 percent of the bat populations have died.
One possibility is disease. A white fungus（真菌）known as fusarium has been found on the noses of both living and dead bats.However,scientists don't know if the fungus is the primary cause of death,a secondary cause of death,or not a cause at all,but the result of some other conditions.
Another possible cause is a lack of food.For example,bats typically eat a large number of moths（蛾）,and in some states such as New York,the number of moths has been declining in recent years. if bats can't eat enough food,they starve to death.
Still other scientists believe that global warming is to blame.Warmer temperatures in recent years have been waking up hibernating（冬眠）bats earlier than usual. If bats break their hiberna- lion at the wrong time,they might not find their expected food sources. The weather might also turn cold again and weaken or kill the bats.
Scientists might not agree on the causes of the bat die-off, but they do agree on the conse- quences. Bats are an important predator of mosquitoes:a single brown bat can eat 1,000 or more insects in an hour. They also eat beetles and other insects that damage plant crops.If there aren't enough bats,damage will be great from the insects they eat. While bats live a long time for their size-the little brown bat can live for more than 30 years-a female bat has only one baby per year,so bat populations grow slowly. Many bat species in the United States are already protected or endangered.
How can you help?Do not disturb sleeping or nesting bats.If you discover bats that seem to be sick or that are dead,contact your local Fish& Wildlife Department with the details.However, be careful not to touch the animals.
What's Killing the Bats
First it was bees.Now it is bats.Biologists in America are working hard to discover the cause of the mysterious deaths of tens of thousands of bats in the northeastern part of the country.
Most of the bats affected are the common little brown bats(Myotis lucifugus,)but other species, such as the long-eared bat,the small-footed bat,the eastern pipistrelle,and the Indiana bat have also been affected. In some caves,more than 90 percent of the bat populations have died.
One possibility is disease. A white fungus（真菌）known as fusarium has been found on the noses of both living and dead bats.However,scientists don't know if the fungus is the primary cause of death,a secondary cause of death,or not a cause at all,but the result of some other conditions.
Another possible cause is a lack of food.For example,bats typically eat a large number of moths（蛾）,and in some states such as New York,the number of moths has been declining in recent years. if bats can't eat enough food,they starve to death.
Still other scientists believe that global warming is to blame.Warmer temperatures in recent years have been waking up hibernating（冬眠）bats earlier than usual. If bats break their hiberna- lion at the wrong time,they might not find their expected food sources. The weather might also turn cold again and weaken or kill the bats.
Scientists might not agree on the causes of the bat die-off, but they do agree on the conse- quences. Bats are an important predator of mosquitoes:a single brown bat can eat 1,000 or more insects in an hour. They also eat beetles and other insects that damage plant crops.If there aren't enough bats,damage will be great from the insects they eat. While bats live a long time for their size-the little brown bat can live for more than 30 years-a female bat has only one baby per year,so bat populations grow slowly. Many bat species in the United States are already protected or endangered.
How can you help?Do not disturb sleeping or nesting bats.If you discover bats that seem to be sick or that are dead,contact your local Fish& Wildlife Department with the details.However, be careful not to touch the animals.
What is the main idea of this passage?
A: All species of bats in North America are dying.
B: Scientists already know the cause of the deaths of bats.
C: The bat deaths are a serious problem.
D: There are many possible causes of the deaths of bats.
A: All species of bats in North America are dying.
B: Scientists already know the cause of the deaths of bats.
C: The bat deaths are a serious problem.
D: There are many possible causes of the deaths of bats.
参考解析
解析：主旨大意题。文章前四段讲述的都是可能造成蝙蝠死亡的原因，但在第五段回归到了蝙蝠死亡导致的严重结果上——严重损害农作物。而在最后一段讲述的是如何帮助减少蝙蝠死亡。归根究底，作者是在讲述蝙蝠死亡的严
根据下文讲蝙蝠神秘的死亡可知，该句是说蜜蜂已经处于神秘死亡的过程中。
根据第一段“...such as the long-eared bat , the small-footed bat , the eastern pipistrelle , and the Indiana bat have also been affected.”可知，这里是列举一些具有各种特色或地区的蝙蝠，因此不难推测pipistrelle是“蝙蝠”的意思。故本题选D。
第三段首句讲蝙蝠死亡的一个可能原因就是缺乏食物，紧接着以纽约蛾的数量近年来一直在下降为例，说明蝙蝠缺少食物。因此蛾是蝙蝠因饥饿而死亡的一个例子。
最后一段第一句是主旨句，即你怎样帮助减少蝙蝠死亡。随后列举减少蝙蝠死亡的具体方法。故本题选D。
根据下文讲蝙蝠神秘的死亡可知，该句是说蜜蜂已经处于神秘死亡的过程中。
根据第一段“...such as the long-eared bat , the small-footed bat , the eastern pipistrelle , and the Indiana bat have also been affected.”可知，这里是列举一些具有各种特色或地区的蝙蝠，因此不难推测pipistrelle是“蝙蝠”的意思。故本题选D。
第三段首句讲蝙蝠死亡的一个可能原因就是缺乏食物，紧接着以纽约蛾的数量近年来一直在下降为例，说明蝙蝠缺少食物。因此蛾是蝙蝠因饥饿而死亡的一个例子。
最后一段第一句是主旨句，即你怎样帮助减少蝙蝠死亡。随后列举减少蝙蝠死亡的具体方法。故本题选D。
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It can be hard to feel much sympathy for bats. Like snakes or spiders or sharks, there’s something quite alarming about bats, something that holds back empathy. Bats aren’t actually,“flying rodents(啮齿动物),” but you likely won’t see them on the next endangered species poster.But bats in the U.S. are in serious trouble, thanks largely to a catastrophic disease called white-nose syndrome (WNS), which has killed at least one million bats, mostly in the northeast, and death rates among some affected winter colonies can be as high as 70%. One species—the little brown bat or Myotis lucifugus—has declined so quickly that it is headed for extinction. And the disease keeps spreading, with wildlife experts helpless to stop it—after starting in upstate New York in 2006, the disease was just confirmed as far west as Ohio yesterday.You might say: so what? Other than people who study bats—would anyone miss them when they’re gone? As it turns out, all of us would—at least if you like food. A new article in Science shows that bats have an important role to play in agriculture—one worth at least $3.7 billion a year, if not far more. That’s how much the extinction of bats throughout North America could cost the region’s food system, according to an analysis by a group of researchers led by Justin Boyles of the University of Pretoria in South Africa. The logic is simple: bats eat bugs—tons and tons of bugs—and that includes crop and forests pests. (A single colony of 150 brown bats in Indianan has been estimated to eat nearly 1.3 million pest insects a year.) Remove the bats, and you remove one of nature’s most effective biological pesticides—which would have to be replaced by actual pesticides, at an economic and environmental expense.It’s not just WNS that is striking down bats. Wind turbines(涡轮机)are apparently killing migratory(迁徙的)bats as well—by 2020, an estimated 33,000 to 111,000 bats are predicted to be killed by turbines in the mid-Atlantic Highlands alone. The authors in the Science paper worry that as wind power develop fast in the U.S., more bats will end up killed by the blades. But WNS seems like the more immediate threat. But it’s still a mystery how WNS spread, and how to stop it—those the U.S. Fish and Wildlife Service, among other government agencies, is on the case. We may not like bats—but we definitely need them.43. What is the author’s opinion about bats?A. IndifferenceB. FrightenedC. WorriedD. Grateful44. Which of the following statements is true about WNS?A. It speads quicklyB. It can be controlled.C. It was first discovered in Ohio.D. It is more serious in the Northwest.45. From Justin Boyles’ study we can learn that _____.A. bats often eat insects killed pesticidesB. bats in North America are short of foodC. some species of bats harm crop plantsD. losing bats means huge economic cost46. What is the author’s purpose of writing this passage?A. To show his opinion of bats.B. To show how impotant bats are in agriculture.C. To tell us a rare animal.D. To report a new science discovery.
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The whole passage centers on__________.A.choosing a career according to what one is skilled inB.acquiring knowledge by working hard at schoolC.finding one's strong and weak pointsD.developing one's abilities useful in school work
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The whole passage centers onA.choosing a career according to what one is skilled in___________.B.acquiring knowledge by working hard at schoolC.finding one's strong and weak pointsD.developing one's abilities useful in school work
共用题干What's Killing the BatsFirst it was bees.Now it is bats.Biologists in America are working hard to discover the cause of the mysterious deaths of tens of thousands of bats in the northeastern part of the country.Most of the bats affected are the common little brown bats(Myotis lucifugus,)but other species, such as the long-eared bat,the small-footed bat,the eastern pipistrelle,and the Indiana bat have also been affected. In some caves,more than 90 percent of the bat populations have died.One possibility is disease. A white fungus（真菌）known as fusarium has been found on the noses of both living and dead bats.However,scientists don't know if the fungus is the primary cause of death,a secondary cause of death,or not a cause at all,but the result of some other conditions.Another possible cause is a lack of food.For example,bats typically eat a large number of moths（蛾）,and in some states such as New York,the number of moths has been declining in recent years. if bats can't eat enough food,they starve to death.Still other scientists believe that global warming is to blame.Warmer temperatures in recent years have been waking up hibernating（冬眠）bats earlier than usual. If bats break their hiberna- lion at the wrong time,they might not find their expected food sources. The weather might also turn cold again and weaken or kill the bats.Scientists might not agree on the causes of the bat die-off, but they do agree on the conse- quences. Bats are an important predator of mosquitoes:a single brown bat can eat 1,000 or more insects in an hour. They also eat beetles and other insects that damage plant crops.If there aren't enough bats,damage will be great from the insects they eat. While bats live a long time for their size-the little brown bat can live for more than 30 years-a female bat has only one baby per year,so bat populations grow slowly. Many bat species in the United States are already protected or endangered.How can you help?Do not disturb sleeping or nesting bats.If you discover bats that seem to be sick or that are dead,contact your local Fish& Wildlife Department with the details.However, be careful not to touch the animals. What does the first sentence in Paragraph 1 mean?A: Bees have been dying mysteriously.B: The first article on the website is about bees.C: Bees usually die before bats.D: It was bees that caused the deaths of bats.
共用题干What's Killing the BatsFirst it was bees.Now it is bats.Biologists in America are working hard to discover the cause of the mysterious deaths of tens of thousands of bats in the northeastern part of the country.Most of the bats affected are the common little brown bats(Myotis lucifugus,)but other species, such as the long-eared bat,the small-footed bat,the eastern pipistrelle,and the Indiana bat have also been affected. In some caves,more than 90 percent of the bat populations have died.One possibility is disease. A white fungus（真菌）known as fusarium has been found on the noses of both living and dead bats.However,scientists don't know if the fungus is the primary cause of death,a secondary cause of death,or not a cause at all,but the result of some other conditions.Another possible cause is a lack of food.For example,bats typically eat a large number of moths（蛾）,and in some states such as New York,the number of moths has been declining in recent years. if bats can't eat enough food,they starve to death.Still other scientists believe that global warming is to blame.Warmer temperatures in recent years have been waking up hibernating（冬眠）bats earlier than usual. If bats break their hiberna- lion at the wrong time,they might not find their expected food sources. The weather might also turn cold again and weaken or kill the bats.Scientists might not agree on the causes of the bat die-off, but they do agree on the conse- quences. Bats are an important predator of mosquitoes:a single brown bat can eat 1,000 or more insects in an hour. They also eat beetles and other insects that damage plant crops.If there aren't enough bats,damage will be great from the insects they eat. While bats live a long time for their size-the little brown bat can live for more than 30 years-a female bat has only one baby per year,so bat populations grow slowly. Many bat species in the United States are already protected or endangered.How can you help?Do not disturb sleeping or nesting bats.If you discover bats that seem to be sick or that are dead,contact your local Fish& Wildlife Department with the details.However, be careful not to touch the animals. What is the purpose of the last paragraph?A: To get people to stop killing batsB: To hire workers for the Fish&Wildlife Department C: To ask people not to touch dead batsD: To tell the public how to help bats
共用题干What's Killing the BatsFirst it was bees.Now it is bats.Biologists in America are working hard to discover the cause of the mysterious deaths of tens of thousands of bats in the northeastern part of the country.Most of the bats affected are the common little brown bats(Myotis lucifugus,)but other species, such as the long-eared bat,the small-footed bat,the eastern pipistrelle,and the Indiana bat have also been affected. In some caves,more than 90 percent of the bat populations have died.One possibility is disease. A white fungus（真菌）known as fusarium has been found on the noses of both living and dead bats.However,scientists don't know if the fungus is the primary cause of death,a secondary cause of death,or not a cause at all,but the result of some other conditions.Another possible cause is a lack of food.For example,bats typically eat a large number of moths（蛾）,and in some states such as New York,the number of moths has been declining in recent years. if bats can't eat enough food,they starve to death.Still other scientists believe that global warming is to blame.Warmer temperatures in recent years have been waking up hibernating（冬眠）bats earlier than usual. If bats break their hiberna- lion at the wrong time,they might not find their expected food sources. The weather might also turn cold again and weaken or kill the bats.Scientists might not agree on the causes of the bat die-off, but they do agree on the conse- quences. Bats are an important predator of mosquitoes:a single brown bat can eat 1,000 or more insects in an hour. They also eat beetles and other insects that damage plant crops.If there aren't enough bats,damage will be great from the insects they eat. While bats live a long time for their size-the little brown bat can live for more than 30 years-a female bat has only one baby per year,so bat populations grow slowly. Many bat species in the United States are already protected or endangered.How can you help?Do not disturb sleeping or nesting bats.If you discover bats that seem to be sick or that are dead,contact your local Fish& Wildlife Department with the details.However, be careful not to touch the animals.A: diseases that kill batsB: insects that bats eatC: animals that have diseasesD: bat species that are starving to death
共用题干What's Killing the BatsFirst it was bees.Now it is bats.Biologists in America are working hard to discover the cause of the mysterious deaths of tens of thousands of bats in the northeastern part of the country.Most of the bats affected are the common little brown bats(Myotis lucifugus,)but other species, such as the long-eared bat,the small-footed bat,the eastern pipistrelle,and the Indiana bat have also been affected. In some caves,more than 90 percent of the bat populations have died.One possibility is disease. A white fungus（真菌）known as fusarium has been found on the noses of both living and dead bats.However,scientists don't know if the fungus is the primary cause of death,a secondary cause of death,or not a cause at all,but the result of some other conditions.Another possible cause is a lack of food.For example,bats typically eat a large number of moths（蛾）,and in some states such as New York,the number of moths has been declining in recent years. if bats can't eat enough food,they starve to death.Still other scientists believe that global warming is to blame.Warmer temperatures in recent years have been waking up hibernating（冬眠）bats earlier than usual. If bats break their hiberna- lion at the wrong time,they might not find their expected food sources. The weather might also turn cold again and weaken or kill the bats.Scientists might not agree on the causes of the bat die-off, but they do agree on the conse- quences. Bats are an important predator of mosquitoes:a single brown bat can eat 1,000 or more insects in an hour. They also eat beetles and other insects that damage plant crops.If there aren't enough bats,damage will be great from the insects they eat. While bats live a long time for their size-the little brown bat can live for more than 30 years-a female bat has only one baby per year,so bat populations grow slowly. Many bat species in the United States are already protected or endangered.How can you help?Do not disturb sleeping or nesting bats.If you discover bats that seem to be sick or that are dead,contact your local Fish& Wildlife Department with the details.However, be careful not to touch the animals.The word"pipistrelle"in Paragraph 1 refers to______..A:.a kind of fungusB: an area in the U.S.C: a special caveD: a kind of bat
__succeed in everything we do.A.Only by working hard can weB.By only working hard we canC.Only we can by working hardD.Only by working hard we can
共用题干What's Killing the Bats?First it was bees .Now it is bats.Biologists in America are working hard to discover the cause of the mysterious deaths of tens of thousands of bats in the northeastern part of the country.Most of the bats affected are the common little brown bats(Myotis lucfugus),but other species, such as the long-eared bat,the small-footed bat,the eastern pipistrelle,and the Indiana bat have also been affected.In some caves,more than 90 percent of the bat populations have died.One possibility is disease. A white fungus（真菌）known as fusarium has been found on the noses of both living and dead bats.However,scientists don't know if the fungus is the primary cause of death,a secondary cause of death,or not a cause at all,but the result of some other conditions.Another possible cause is a lack of food.For example,bats typically eat a large number of moths（蛾）,and in some states such as New York,the number of moths has been declining in recent years.If bats can't eat enough food,they starve to death.Still other scientists believe that global warming is to blame.Warmer temperatures in recent years have been waking up hibernating（冬眠）bats earlier than usual. If bats break their hibernation at the wrong time,they might not find their expected food sources.The weather might also turn cold again and weaken or kill the bats.Scientists might not agree on the causes of the bat die-off,but they do agree on the consequences.Bats are an important predator of mosquitoes;a single brown bat can eat 1,000 or more insects in an hour. They also eat beetles and other insects that damage plant crops.If there aren't enough bats,damage will be great from the insects they eat.While bats live a long time for their size-the little brown bat can live for more than 30 years-a female bat has only one baby per year,so bat populations grow slowly. Many bat species in the United States are already protected or endangered.How can you help?Do not disturb sleeping or nesting bats.If you discover bats that seem to be sick or that are dead,contact your local Fish&Wildlife Department with the details.However,be careful not to touch the animals. What does the first sentence in Paragraph 1 mean?A: Bees have been dying mysteriously.B: The first article on the website is about bees.C: Bees usually die before bats.D:.It was bees that caused the deaths of bats.
共用题干What's Killing the Bats?First it was bees .Now it is bats.Biologists in America are working hard to discover the cause of the mysterious deaths of tens of thousands of bats in the northeastern part of the country.Most of the bats affected are the common little brown bats(Myotis lucfugus),but other species, such as the long-eared bat,the small-footed bat,the eastern pipistrelle,and the Indiana bat have also been affected.In some caves,more than 90 percent of the bat populations have died.One possibility is disease. A white fungus（真菌）known as fusarium has been found on the noses of both living and dead bats.However,scientists don't know if the fungus is the primary cause of death,a secondary cause of death,or not a cause at all,but the result of some other conditions.Another possible cause is a lack of food.For example,bats typically eat a large number of moths（蛾）,and in some states such as New York,the number of moths has been declining in recent years.If bats can't eat enough food,they starve to death.Still other scientists believe that global warming is to blame.Warmer temperatures in recent years have been waking up hibernating（冬眠）bats earlier than usual. If bats break their hibernation at the wrong time,they might not find their expected food sources.The weather might also turn cold again and weaken or kill the bats.Scientists might not agree on the causes of the bat die-off,but they do agree on the consequences.Bats are an important predator of mosquitoes;a single brown bat can eat 1,000 or more insects in an hour. They also eat beetles and other insects that damage plant crops.If there aren't enough bats,damage will be great from the insects they eat.While bats live a long time for their size-the little brown bat can live for more than 30 years-a female bat has only one baby per year,so bat populations grow slowly. Many bat species in the United States are already protected or endangered.How can you help?Do not disturb sleeping or nesting bats.If you discover bats that seem to be sick or that are dead,contact your local Fish&Wildlife Department with the details.However,be careful not to touch the animals. What is the purpose of the last paragraph?A: To get people to stop killing bats.B: To hire workers for the Fish&Wildlife Department.C: To ask people not to touch dead bats.D: To tell the public how to help bats.
共用题干What's Killing the Bats?First it was bees .Now it is bats.Biologists in America are working hard to discover the cause of the mysterious deaths of tens of thousands of bats in the northeastern part of the country.Most of the bats affected are the common little brown bats(Myotis lucfugus),but other species, such as the long-eared bat,the small-footed bat,the eastern pipistrelle,and the Indiana bat have also been affected.In some caves,more than 90 percent of the bat populations have died.One possibility is disease. A white fungus（真菌）known as fusarium has been found on the noses of both living and dead bats.However,scientists don't know if the fungus is the primary cause of death,a secondary cause of death,or not a cause at all,but the result of some other conditions.Another possible cause is a lack of food.For example,bats typically eat a large number of moths（蛾）,and in some states such as New York,the number of moths has been declining in recent years.If bats can't eat enough food,they starve to death.Still other scientists believe that global warming is to blame.Warmer temperatures in recent years have been waking up hibernating（冬眠）bats earlier than usual. If bats break their hibernation at the wrong time,they might not find their expected food sources.The weather might also turn cold again and weaken or kill the bats.Scientists might not agree on the causes of the bat die-off,but they do agree on the consequences.Bats are an important predator of mosquitoes;a single brown bat can eat 1,000 or more insects in an hour. They also eat beetles and other insects that damage plant crops.If there aren't enough bats,damage will be great from the insects they eat.While bats live a long time for their size-the little brown bat can live for more than 30 years-a female bat has only one baby per year,so bat populations grow slowly. Many bat species in the United States are already protected or endangered.How can you help?Do not disturb sleeping or nesting bats.If you discover bats that seem to be sick or that are dead,contact your local Fish&Wildlife Department with the details.However,be careful not to touch the animals. What is the main idea of this passage?A: All species of bats in North America are dying.B: Scientists already know the cause of the deaths of bats.C: The bat deaths are a serious problem.D: There are many possible causes of the deaths of bats.
共用题干What's Killing the Bats?First it was bees .Now it is bats.Biologists in America are working hard to discover the cause of the mysterious deaths of tens of thousands of bats in the northeastern part of the country.Most of the bats affected are the common little brown bats(Myotis lucfugus),but other species, such as the long-eared bat,the small-footed bat,the eastern pipistrelle,and the Indiana bat have also been affected.In some caves,more than 90 percent of the bat populations have died.One possibility is disease. A white fungus（真菌）known as fusarium has been found on the noses of both living and dead bats.However,scientists don't know if the fungus is the primary cause of death,a secondary cause of death,or not a cause at all,but the result of some other conditions.Another possible cause is a lack of food.For example,bats typically eat a large number of moths（蛾）,and in some states such as New York,the number of moths has been declining in recent years.If bats can't eat enough food,they starve to death.Still other scientists believe that global warming is to blame.Warmer temperatures in recent years have been waking up hibernating（冬眠）bats earlier than usual. If bats break their hibernation at the wrong time,they might not find their expected food sources.The weather might also turn cold again and weaken or kill the bats.Scientists might not agree on the causes of the bat die-off,but they do agree on the consequences.Bats are an important predator of mosquitoes;a single brown bat can eat 1,000 or more insects in an hour. They also eat beetles and other insects that damage plant crops.If there aren't enough bats,damage will be great from the insects they eat.While bats live a long time for their size-the little brown bat can live for more than 30 years-a female bat has only one baby per year,so bat populations grow slowly. Many bat species in the United States are already protected or endangered.How can you help?Do not disturb sleeping or nesting bats.If you discover bats that seem to be sick or that are dead,contact your local Fish&Wildlife Department with the details.However,be careful not to touch the animals. The“moths”in Paragraph 3 are taken as an example of______.A: diseases that kill batsB: insects that bats eatC: animals that have diseasesD: bat species that are starving to death
Tens of thousands of sportsmen assembled in Stratford Olympic Stadium in London to take part in the opening ceremony of the 30th Olympic Games.A:appeared B:walkedC:gathered D:combined
共用题干What's Killing the Bats?First it was bees .Now it is bats.Biologists in America are working hard to discover the cause of the mysterious deaths of tens of thousands of bats in the northeastern part of the country.Most of the bats affected are the common little brown bats(Myotis lucfugus),but other species, such as the long-eared bat,the small-footed bat,the eastern pipistrelle,and the Indiana bat have also been affected.In some caves,more than 90 percent of the bat populations have died.One possibility is disease. A white fungus（真菌）known as fusarium has been found on the noses of both living and dead bats.However,scientists don't know if the fungus is the primary cause of death,a secondary cause of death,or not a cause at all,but the result of some other conditions.Another possible cause is a lack of food.For example,bats typically eat a large number of moths（蛾）,and in some states such as New York,the number of moths has been declining in recent years.If bats can't eat enough food,they starve to death.Still other scientists believe that global warming is to blame.Warmer temperatures in recent years have been waking up hibernating（冬眠）bats earlier than usual. If bats break their hibernation at the wrong time,they might not find their expected food sources.The weather might also turn cold again and weaken or kill the bats.Scientists might not agree on the causes of the bat die-off,but they do agree on the consequences.Bats are an important predator of mosquitoes;a single brown bat can eat 1,000 or more insects in an hour. They also eat beetles and other insects that damage plant crops.If there aren't enough bats,damage will be great from the insects they eat.While bats live a long time for their size-the little brown bat can live for more than 30 years-a female bat has only one baby per year,so bat populations grow slowly. Many bat species in the United States are already protected or endangered.How can you help?Do not disturb sleeping or nesting bats.If you discover bats that seem to be sick or that are dead,contact your local Fish&Wildlife Department with the details.However,be careful not to touch the animals. The word“pipistrelle”in Paragraph 1 refers to______.A: a kind of fungusB: an area in the U.S.C: a special caveD: a kind of bat
American Survey TestThe （）part of America consists of high plateaus and mountains formed by the Great Cordillera Range.A、easternB、westernC、northeastern
填空题To encourage bats spread seeds is the function of installing man-made bat roosts in deforested areas.____
单选题______succeed in doing anything.AOnly by working hard we canBBy only working hard we canCOnly by working hard can weDOnly we can by working hard
单选题The central government has been working hard to keep China’s economy _____.AdurableBdubiousCdramaticDdynamic
填空题What’s Mike Smith’s present job?He’s working as a ____.