判断题They’re doing some very innovative work in solar energy.“innovative” here means something out of date.A对B错
判断题
They’re doing some very innovative work in solar energy.“innovative” here means something out of date.
A
对
B
错
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解析：
暂无解析
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How do you plan to distribute the securities?A.Some protect actresses, some work outside the cinemaB.Some protect actors and actresses, some guard dressing rooms and others work outside the theatreC.Some protect actors and actresses, some guide audience and others work outside the theatreD.Some guard dressing rooms, some protect super stars and others work outside the stadium.
They’re doing some very innovative work in solar energy. “innovative” here means something out of date. () 此题为判断题(对，错)。
Mary: What are you working on? Susan: I'm doing some embroidery. Mary: ______ Susan: I don't do very much, just for very special occasions.A．I didn't know you did needlework.B．I think you have done a good job.C．Where did you learn to do needlework?D．Why do you do needlework?
The terms of payment are important for both the seller and the buyer. For the seller, the best terms would be full payment ________. We’re flexible, adaptable and innovative. Everything we do is about your bu cash at the time of sale. But the buyer would prefer to have the goods before making payment. Importers and exporters are separated from each other by ________. We’re flexible, adaptable and innovative. Everything we do is about your bu?of miles. This adds to the difficulties of ________. We’re flexible, adaptable and innovative. Everything we do is about your bu an agreement of payment. However, exporters and importers usually meet each other half-way and agree to payment by a Letter of Credit. A letter of credit (L/C) is a banker’s guarantee that payment will be made, if all the required shipping documents are presented. * In this way, exporters receive a guarantee not only from importers, but also from a bank. * On ________. We’re flexible, adaptable and innovative. Everything we do is about your buhand, importers are given the guarantee that the bank will not make payment unless all the shipping documents are presented. Nevertheless, the exporter can further require an ________letter of credit. That means the guarantee of payment cannot be cancelled either by the opening bank or the importer.
It' s clear that more and more ( )are doing very important research work in our country. A、women-scientistsB、women-scientistC、woman-scientistsD、woman-scientist
I am very busy.I have a very difficult problem(). A、to workB、to work outC、to be worked outD、to work it out
Which statement can be inferred from this article?A．If a worker is doing very boring work, he will ask for more money surely.B．Sometimes money doesn"t work so as to improve the productivity.C．Workers prefer freedom when producing.D．Diversity of jobs can improve the work efficiency.
共用题干第一篇Putting Plants to WorkUsing the power of the sun is nothing new.People have had solar-powered calculators and buildings withsolar panels（太阳能电池板）for decades. But plants are the real experts. They' ve been using sunlight as anenergy source for billions of years.Cells in the green leaves of plants work like tiny factories to convert sunlight, carbon dioxide（二氧化 碳）,and water into sugarsand starche（淀粉）,stored energy that the piants can use. This conversion process is called photosynthesis (光合作用）Unfortunately, unless you' re a plant, it's difficult and expensive to convert sunlight into storable energy. That's why scientists are taking a closer look at exactly how plants do it.Some scientists are trying to get plants,or biological cells that act like plants, to work as very small photosynthesic power stations. For example, Maria Ghirardi of the National Renewable Energy Laboratory in Golden. Cobo.,is working with green algae（水藻）.She's trying to trick them into producing hydrogen instead of sugars when they perform photosynthesis. Once the researchers can get the algae working efficient- ly ,the hydrogen that they produce could be used to power fuel cells in cars or to generate electricity.The algae are grown in narrow-necked glass bottles to produce hydrogen in the lab. During photosynthe- sis , plants normally make sugars or strchds. "But under certain conditions,a lot of algae are able to use the sunlight energy not to store starch , but to make hydrogen."Ghirardi says. For example ,algae will produce hy-drogen in an airfree environment. It' s the oxygen in the air that prevents algae from making hydrogen most of the time.Working in an airfree environment, however, is difficult. It's not a practical way to produce cheap energy. But Ghirardi and her colleagues have discovered that by removing a chemical called sulfate（硫酸盐） from the environment that the algae grow in, they will make hydrogen instead of sugars,even when air is present.Unfortunately, removing the sulfate also makes the algae's cells work very slowly,and not much hydrogen is produced. Still ,the researchers see this as a first step in their goal to produce hydrogen efficiently from algae. With more work,they may be able to speed the cells' activity and produce larger quantities of hydrogen.The researchers hope that algae will one day be an easy-to-use fuel source. The organisms are cheap to get and to feed, Ghirardi says,and they can grow almost anywhere:"You can grow them in a reactor, in a pond. You can grow them in the ocean. There's a lot of flexibility in how you can use these organisms." Algae are able to use solar energy to produce hydrogen when_______________.A:they are grown in narrow-necked bottlesB:there is no oxygen in the airC:there is enough oxygen in the airD:enough starch is stored
共用题干Better Solar Energy Systems:More Heat,More LightSolar photovoltaic（光电的）thermal energy systems , or PVTs , generate both heat and electricity , but _________ (51)now they haven't been very good at the heat-generating part compared to a stand-alone solar thermal collector. That ' s because they operate at low temperatures to cool crystalline silicon（晶体硅）solar cells, _______(52)lets the silicon generate more electricity but isn't a very efficient way to gather heat.That's a problem of economics.Good solar hot-water systems can harvest much more energy than asolar一electric system at a substantially lower _________(53).And it's also a space problem:photovoltaiccells can_________(54)up all the space on the roof,leaving little room for thermal applications.In a pair of studies,Joshua Pearce,an associate professor of materials science and engineering,has de- vised a_________(55)in the form of a better PVT made with a different kind of silicon.Most solar panels are made with crystalline silicon,but you can also make solar cells out of amorphous（非晶形的）silicon , commonly known________( 56 ) thin-film silicon. They don ' t create as much elec-tricity,but they are lighter,flexible,and cheaper. And,because they________(57)much less silicon,they have a greener footprint._________(58),thin-film silicon solar cells are vulnerable to some bad一news physics in the form of the Staebler-Wronski effect."That means that their efficiency drops when you_________(59)them to light一pretty much the worst possible effect for a solar cell,"Pearce explains,which is one of the__________(60)thin-film solar panels make up only a small fraction of the market.However,Pearce and his team found a_______(61)to engineer around the Staebler-Wronski effect by incorporating thin-film silicon in a new________(62)of PVT. You don't have to cool down thin-film sili- con to make it work.In fact,Pearce's group discovered that by heating it to solar-thermal operating tempera- tures,near the boiling_________(63)of water,they could make thicker cells that largely_________(64) the Staebler-Wronski effect.When they applied the thin-film silicon directly to a solar thermal energy collector, they also found that by baking the cell once a day,they_________(65)the solar cell's electrical efficiency by over 10 percent._________(57)A:retrieveB:requireC:mergeD:exchange
共用题干California Gives Green Light to Space Solar PowerEnergy beamed down from space is one step closer to reality,now that California has given the green light to an agreement that would see the Pacific Gas and Electric Company buy 200 megawatts（兆瓦）of power beamed down from solar-power satellites beginning in 2016.But some major challenges will have to beovercome if the technology is to be used widely.A start-up company called Solaren is designing the satellites,which it says will use radio waves to beamenergy down to a receiving station on Earth.The attraction of collecting solar power in space is the almost uninterrupted sunshine available in geo- synchronous（与地球同步的）orbit. Earth-based solar cells , by contrast , can only collect sun light during day-time and when skies are clear.But space-based solar power must grapple（努力克服）with the high cost per kilogram of launching things in- to space,says Richard Schwartz of Purdue University in West Lafayette,Indiana."if you're talking about it being economically viable for power of the Earth,it's a tough go,"he says.Cal Boerman,Solaren's director of energy services,says the company designed its satellites with a view to keeping launch costs down."We knew we had to come up with a different,revolutionary design,"he says. A patent the company has won describes ways to reduce the system's weight,including using inflatable mir- rors to focus sunlight on solar cells,so a smaller number can collect the same amount of energy.But using mirrors introduces other challenges,including keeping the solar cells from overheating,says Schwartz."You have to take care of heat dissipation（散发）because you're now concentrating a lot of energy in one place,"he says.According to the company's patent,Solaren's solar cells will be connected to radia-tors to help keep them cool.Though Boerman says the company believes it can make space-based solar power work,it is not expec-ting to crowd out other forms of renewable energy.Laws in California and other states require increasing use of renewable energy in coming years,he points out."To meet those needs,we're going to need all types of renewable energy sources,"he says.Solaren is going to design 200 solar-power satellites.A:RightB:WrongC:Not mentioned
共用题干Better Solar Energy Systems: More Heat, More LightSolar photovoltaic thermal energy systems,or PVTs,generate both heat and electricity,but until now they haven't been very good at the heat-generating part compared to a stand-alone solar thermal collector. That's because they operate at low temperatures to cool crystalline silicon solar cells,which lets the silicon generate more electricity but isn't a very efficient way to gather heat.That's a problem of economics. Good solar hot-water systems can harvest much more energy than a solar-electric system at a substantially lower cost. And it's also a space problem:photovol-taic cells can take up all the space on the roof,leaving little room for thermal applications.In a pair of studies,Joshua Pearce,an associate professor of materials science and engineer-ing,has devised a solution in the form of a better PVT made with a different kind of silicon.His research collaborators are Kunal Girotra from Thin Silicon in California and Michael Pathak and Stephen Harrison from Queen's University,Canada.Most solar panels are made with crystalline silicon,but you can also make solar cells out of amorphous silicon,commonly known as thin-film silicon.They don't create as much electricity, but they are lighter,flexible,and cheaper. And,because they require much less silicon,they have a greener footprint. Unfortunately,thin-film silicon solar cells are vulnerable to some bad-news physics in the form of the Staebler-Wronski effect."That means that their efficiency drops when you expose them to light-pretty much the worst possible effect for a solar cell,"Pearce explains,which is one of the reasons thin-film solar panels make up only a small fraction of the market.However,Pearce and his team found a way to engineer around the Staebler-Wronski effect by incorporating thin-film silicon in a new type of PVT. You don't have to cool down thin-film silicon to make it work.In fact,Pearce's group discovered that by heating it to solar-thermal operating temperatures,near the boiling point of water,they could make thicker cells that largely overcame the Staebler-Wronski effect. When they applied the thin-fulm silicon directly to a solar thermal en-ergy collector,they also found that by baking the cell once a day,they boosted the solar cell's e-lectrical efficiency by over 10 percent. PVTs are not efficient in______.A:.creating electricityB: cooling silicon solar cellsC: generating heatD: powering solar thermal collectors
共用题干Better Solar Energy Systems: More Heat, More LightSolar photovoltaic thermal energy systems,or PVTs,generate both heat and electricity,but until now they haven't been very good at the heat-generating part compared to a stand-alone solar thermal collector. That's because they operate at low temperatures to cool crystalline silicon solar cells,which lets the silicon generate more electricity but isn't a very efficient way to gather heat.That's a problem of economics. Good solar hot-water systems can harvest much more energy than a solar-electric system at a substantially lower cost. And it's also a space problem:photovol-taic cells can take up all the space on the roof,leaving little room for thermal applications.In a pair of studies,Joshua Pearce,an associate professor of materials science and engineer-ing,has devised a solution in the form of a better PVT made with a different kind of silicon.His research collaborators are Kunal Girotra from Thin Silicon in California and Michael Pathak and Stephen Harrison from Queen's University,Canada.Most solar panels are made with crystalline silicon,but you can also make solar cells out of amorphous silicon,commonly known as thin-film silicon.They don't create as much electricity, but they are lighter,flexible,and cheaper. And,because they require much less silicon,they have a greener footprint. Unfortunately,thin-film silicon solar cells are vulnerable to some bad-news physics in the form of the Staebler-Wronski effect."That means that their efficiency drops when you expose them to light-pretty much the worst possible effect for a solar cell,"Pearce explains,which is one of the reasons thin-film solar panels make up only a small fraction of the market.However,Pearce and his team found a way to engineer around the Staebler-Wronski effect by incorporating thin-film silicon in a new type of PVT. You don't have to cool down thin-film silicon to make it work.In fact,Pearce's group discovered that by heating it to solar-thermal operating temperatures,near the boiling point of water,they could make thicker cells that largely overcame the Staebler-Wronski effect. When they applied the thin-fulm silicon directly to a solar thermal en-ergy collector,they also found that by baking the cell once a day,they boosted the solar cell's e-lectrical efficiency by over 10 percent. Thin-film solar panels do not sell well on market because______.A:.their advantages are not well-recognizedB: they do not work well if exposed to lightC: they need improving in appearanceD: they are. not advertised
共用题干California Gives Green Light to Space Solar PowerEnergy beamed down from space is one step closer to reality,now that California has given the green light to an agreement that would see the Pacific Gas and Electric Company buy 200 megawatts（兆瓦）of power beamed down from solar-power satellites beginning in 2016.But some major challenges will have to beovercome if the technology is to be used widely.A start-up company called Solaren is designing the satellites,which it says will use radio waves to beamenergy down to a receiving station on Earth.The attraction of collecting solar power in space is the almost uninterrupted sunshine available in geo- synchronous（与地球同步的）orbit. Earth-based solar cells , by contrast , can only collect sun light during day-time and when skies are clear.But space-based solar power must grapple（努力克服）with the high cost per kilogram of launching things in- to space,says Richard Schwartz of Purdue University in West Lafayette,Indiana."if you're talking about it being economically viable for power of the Earth,it's a tough go,"he says.Cal Boerman,Solaren's director of energy services,says the company designed its satellites with a view to keeping launch costs down."We knew we had to come up with a different,revolutionary design,"he says. A patent the company has won describes ways to reduce the system's weight,including using inflatable mir- rors to focus sunlight on solar cells,so a smaller number can collect the same amount of energy.But using mirrors introduces other challenges,including keeping the solar cells from overheating,says Schwartz."You have to take care of heat dissipation（散发）because you're now concentrating a lot of energy in one place,"he says.According to the company's patent,Solaren's solar cells will be connected to radia-tors to help keep them cool.Though Boerman says the company believes it can make space-based solar power work,it is not expec-ting to crowd out other forms of renewable energy.Laws in California and other states require increasing use of renewable energy in coming years,he points out."To meet those needs,we're going to need all types of renewable energy sources,"he says.Space-based solar cells could collect solar power only when skies are clear.A:RightB:WrongC:Not mentioned
Text 1 A new study suggests that contrary to most surveys,people are actually more stressed at home than at work.Researchers measured people’s cortisol,which is a stress marker,while they were at work and while they were at home and found it higher at what is supposed to be a place of refuge.“Further contradicting conventional wisdom,we found that women as well as men have lower levels of stress at work than at home”,writes one of the researchers,Sarah Damske.In fact women even say they feel better at work,she notes.“It is men,not women,who report being happier at home than at work.”Another surprise is that findings hold true for both those with children and without,but more so for nonparents.This is why people who work outside the home have better health.What the study doesn’t measure is whether people are still doing work when they’re at home,whether it is household work or work brought home from the office.For many men,the end of the workday is a time to kick back.For women who stay home,they never get to leave the office.And for women who work outside the home,they often are playing catch-up-with-household tasks.With the blurring of roles,and the fact that the home front lags well behind the workplace in making adjustments for working women,it’s not surprising that women are more stressed at home.But it’s not just a gender thing.At work,people pretty much know what they’re supposed to be doing:working,making money,doing the tasks they have to do in order to draw an income.The bargain is very pure:Employee puts in hours of physical or mental labor and employee draws out life-sustaining moola.On the home front,however,people have no such clarity.Rare is the household in which the division of labor is so clinically and methodically laid out.There are a lot of tasks to be done,there are inadequate rewards for most of them.Your home colleagues—your family—have no clear rewards for their labor;they need to be talked into it,or if they’re teenagers,threatened with complete removal of all electronic devices.Plus,they’re your family.You cannot fire your family.You never really get to go home from home.So it’s not surprising that people are more stressed at home.Not only are the tasks apparently infinite,the co-workers are much harder to motivate.According to Damaske,who are likely to be the happiest at home?A.Working mothers.B.Childless husbands.C.Childless wives.D.Working fathers.
It is difficult to know why a work of art produces some emotions，but it has been known for a very long time that paintings，music and poetry have the power to touch us，to repel us and to______intense pleasure or displeasure.A.riseB.ariseC.raiseD.arouse
They’re doing some very innovative work in solar energy.“innovative” here means something out of date.A对B错
They’re doing some very innovative work in solar energy.“innovative” here means something out of date.
单选题According to the passage9 which of the following statements is NOT TRUE?ASolar panels are very expensive to install.BSheridan Community Schools is completely solar-powered.CIn 2014, fewer than l,000 schools used solar power in the US.DMore and more schools are switching to solar power to cut costs.
单选题Because our work is very busy, so we need to relax at midday.AWe are very busy,BOur work being busy,COur work so very busy,DBecause our work so very busy,
单选题She had clearly no（）of doing any work, although she was very well paid.AtendencyBambitionCintentionDwillingness
问答题There are robots all along, making our lives easier. Some of them, like the (1) _______pocket calculator, can work much more quickly as human beings can. And they (2) _______rarely make mistakes. In some ways robots are better than people.. They work quickly, but not tomake mistakes. They do not get boring doing the same job over and over (3) _______again. And they never get tired. So are robots very useful in factories. They can be taught to do many (4) _______different jobs. First their electronic brains must show how the job is done. A (5) _______person moves the robot’s “arms” and “hand” through each part of the job. Therobot’s brain remembers each move. When the robot is put to work on its itself, (6) _______its brain controls the rods, wheels and motors which move its arm. When the robot needed for a new job, its electronic memory is “wiped (7) _______clean”. Then it is taught how to do its new task. If the robot’s hand stops to work, or if something gets in the way, it (8) _______cannot do the next part of the job. So it starts and signals for help. Then a (9) _______human engineer attends to the fault. Robots are also used for doing jobs which are dangerous. They canmove objects which are too hot or too heavy to people to handle. They can (10) _______work in places which are too hot or too cold.