单选题From the passage we learn that _________.Aturtles are the only source used to make medicine to cure a number of ailmentsBsome chemical substances may have the same effect as turtlesCturtles are nearly extinct in ChinaDturtle dishes are the only expensive delicacy in Chinese restaurants
单选题
From the passage we learn that _________.
A
turtles are the only source used to make medicine to cure a number of ailments
B
some chemical substances may have the same effect as turtles
C
turtles are nearly extinct in China
D
turtle dishes are the only expensive delicacy in Chinese restaurants
参考解析
解析：
本题是主旨题。从全文可知，文章最想表达的是作者为乌龟大量被杀，成为餐桌上的佳肴的事感到遗憾和难过；但又讲到从龟类身上达到治病防病的目的是人们的初衷，所以建议化学合成龟身上的有益物质；所以答案为B。
本题是主旨题。从全文可知，文章最想表达的是作者为乌龟大量被杀，成为餐桌上的佳肴的事感到遗憾和难过；但又讲到从龟类身上达到治病防病的目的是人们的初衷，所以建议化学合成龟身上的有益物质；所以答案为B。
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资料：The federal government on Wednesday recommended an endangered-species listing for the loggerhead turtles in U.S. Waters, a decision that could lead to tighter restrictions on fishing and other maritime trades.Environmental groups who’ d been pushing an endangered listing said the proposal was a “turning point”they hope will lead to greater turtle protections.“I think it’ s huge day for loggerhead sea turtles, ”said Beth Riff, a marine wildlife scientist at Oceana.“it really draws attention to the fact these turtles are not doing well and more needs to be done to protect them.”With all that attention to paid to them, you’d think these creatures would at least have the gratitude not to go extinct, but Nature is indifferent to human notions of fairness.No one really knows how many loggerhead there are, or how many are being killed by fishing gear or other activities. Riff cites a 40 percent drop in the number of nesting females in Florida over the last decade as evidence of trouble.Loggerheads are named for their large heads, which contain potent jaws that can crush the hard shells of prey such as conch. The turtles are about the size of a fist when they hatch and make a frenzied dash to the surf. But they typically grow to more than three feet in length and 250 pounds. The animal can log thousands of miles as it travels across oceans.Barbara Schoder，national sea turtle coordinator for NOAA’s fisheries division, said the biggest threats to the North Pacific loggerhead include damage to primary nesting sites, which are mainly in Japan，as well as accidental snaring of the turtles in fishing gear. Andrea Tee of San Francisco-based Center for Biological Diversity said the turtles get hooked by Hawaiian longline fishermen targeting swordfish and tuna and can be injured or drowned. On the East Coast, the main threat to turtles is gear from the region’s various fishenes Schoder said.A primary benefit of the endangered status would be increased public pressure on protecting the species, Riff said. But the government would also have to determine“critical habitats，”such as where the turtles reproduce or forage. Such places could be subject to additional protections for the turtles, including restrictions on maritime development or fishing.Like every other environmental issue today, this is playing out against the background of global warming and human interference with natural ecosystems, The narrow strips of beach on which the turtles lay their eggs are being squeezed on one side by development and on the other by threat of rising sea levels as the oceans warm. Ultimately we must get a handle on those issues as well, or a creature that outlived the dinosaurs will meet its end at the hands of humans, leaving our descendants to wonder how creature so ugly could have won so much affection.It can be learned from the first paragraph that（ ）.A.human activities have changed the way turtles surviveB.Efforts have been made to protect turtles from extinctionC.Marine biologists are looking for the secret of turtles’ reproductionD.Government bureaucracy has contributed to decreasing number of turtles
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共用题干The Need to RememberSome people say they have no memory at all:"I just can't remember a thing!"But of course we all have a memory.Our memory tells us who we are.Our memory helps us to make use in the present of what we have learnt in the past.In fact we have different types of memory.For example,our visual memory helps us recall facts and places.Some people have such a strong visual memory that they can remember exactly what they have seen,for example,pages of a book,as a complete picture.Our verbal（言语的）memory helps us remember words and figures we may have heard but not seen or written:Items of a shopping list,a chemical formula,dates,or a recipe.With our emotional（情感的）memory, we recall situations or places where we had; strong feelings,perhaps of happiness or unhappiness. We also have special memories for smell,taste, touch and sound,and for performing physical movements.We have two ways of storing any of these memories. Our short-term memory stores items for up to thirty seconds-enough to remember a telephone number while we dial.Our long-term mem-ory,on the other hand,may store items for a lifetime. Older people in fact have a much biter long-term memory than short-term .They may forget what they have done only a few hours ago,but have the clearest remembrance（记忆）of when they were very young.Psychologists tell us that we only remember a few facts about our past,and that we invent the rest. It is as though we remember only the outline of a story.We then make up the details. We of-ten do this in the way we want to remember them,usually so that we appear as the heroes of our own past , or maybe victims needing sympathy（同情）.Emotional memory is used when we perform physical movements.A: RightB: WrongC: Not mentioned
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