Animals can be reproduced by technology now; researchers can clone them. A clone is an exact copy of another animal or plant. Scientists have cloned a sheep which they have named Dolly. Researchers took genes from a ewe (母羊) and used them to create a copy (Dolly) of the ewe.
Why are scientists doing this research? One reason is to get information about genes so they can improve our health. They also want to learn how better farm animals can be produced. Cloning is a controversial issue for people. Some people think it is good because this research can help us, but other people think cloning is unacceptable. Some people think it might be possible to save endangered animals by cloning them. Tigers, elephants, and other endangered animals might be saved in this way.
In China, pandas are endangered because they are hunted and they are losing their habitat, so some Chinese scientists want to try to clone pandas to save them from extinction.
I don’t really like the idea of cloning animals, but I don’t think I want panda to become extinct. If the best way to save them is to make cloned pandas, they must be cloned.
I want to live with a lot of animals and nature. I don’t want animals to die out, especially pandas. I think humans must think more about protecting animals and nature. Maybe cloning is the way to save all endangered animals.
1.What is Dolly like?
A. It is like other ordinary sheep we often see.
B. It is a bit like the ewe.
C. It is exactly like the ewe researchers took genes from.
D. It is like a perfect sheep that researchers want to make.
2.What is the technology scientists use to clone animals?
A. They use the technology of animal improvement.
B. they take genes from an animal and use them to make a copy of it.
C. They change the genes of a ewe and then get them improved.
D. They combine advantages of some animals to make a better one.
3.By studying cloning, scientists can____.
A. make copies of many famous people in the world.
B. start a new industry where many more people may find jobs.
C. find ways to feed the whole world.
D. improve our health and produce fine animals.
4.From the passage we can learn that____.
A. people are all for the technology of cloning.
B. only scientists are interested in cloning.
C. people don’t hold the same opinion about cloning.
D. all the people think cloning unacceptable.
高二英语阅读理解中等难度题
Animals can be reproduced by technology now; researchers can clone them. A clone is an exact copy of another animal or plant. Scientists have cloned a sheep which they have named Dolly. Researchers took genes from a ewe (母羊) and used them to create a copy (Dolly) of the ewe.
Why are scientists doing this research? One reason is to get information about genes so they can improve our health. They also want to learn how better farm animals can be produced. Cloning is a controversial issue for people. Some people think it is good because this research can help us, but other people think cloning is unacceptable. Some people think it might be possible to save endangered animals by cloning them. Tigers, elephants, and other endangered animals might be saved in this way.
In China, pandas are endangered because they are hunted and they are losing their habitat, so some Chinese scientists want to try to clone pandas to save them from extinction.
I don’t really like the idea of cloning animals, but I don’t think I want panda to become extinct. If the best way to save them is to make cloned pandas, they must be cloned.
I want to live with a lot of animals and nature. I don’t want animals to die out, especially pandas. I think humans must think more about protecting animals and nature. Maybe cloning is the way to save all endangered animals.
1.What is Dolly like?
A. It is like other ordinary sheep we often see.
B. It is a bit like the ewe.
C. It is exactly like the ewe researchers took genes from.
D. It is like a perfect sheep that researchers want to make.
2.What is the technology scientists use to clone animals?
A. They use the technology of animal improvement.
B. they take genes from an animal and use them to make a copy of it.
C. They change the genes of a ewe and then get them improved.
D. They combine advantages of some animals to make a better one.
3.By studying cloning, scientists can____.
A. make copies of many famous people in the world.
B. start a new industry where many more people may find jobs.
C. find ways to feed the whole world.
D. improve our health and produce fine animals.
4.From the passage we can learn that____.
A. people are all for the technology of cloning.
B. only scientists are interested in cloning.
C. people don’t hold the same opinion about cloning.
D. all the people think cloning unacceptable.
高二英语阅读理解中等难度题查看答案及解析
Scientific research shows that animals can show emotions like human beings. They are sometimes lively, and sometimes bad-tempered.
A．contradictory B．instant C．appropriate D．flexible
高二英语单项填空简单题查看答案及解析
Now a lot of new technologies can ___ problems in industry.
A. be applied to solving B. be applied to solve
C. apply to D.apply for
高二英语单项填空中等难度题查看答案及解析
Now a lot of new technologies can ______ problems in industry.
| A．be applied to solve | B．be applied to solving |
| C．apply to solve | D．apply to solving |
高二英语单项填空中等难度题查看答案及解析
Now a lot of new technology can _____ problems in industry.
A. be applied to solve B. be applied to solving
C. apply to solve D. apply to solving
高二英语单项填空中等难度题查看答案及解析
Now a lot of new technologies can ________ problems in industry.
A．be applied to solve B．be applied to solving
C．apply to solve D．apply to solving
高二英语单项填空中等难度题查看答案及解析
New light may be ________ the cause of cancer by research that is now in progress．
A、thrown B、thrown off C、thrown on D、thrown by
高二英语单项填空中等难度题查看答案及解析
Air travel can be annoying. But research now suggests global warming could make it much worse. To get off the ground in really hot weather, planes may be forced to carry fewer passengers. That might mean a little more space, which would be good. However, it also would make the passengers pay more.
Average air temperatures around the world are rising because people are polluting the air with increasing amounts of greenhouse gases, which, such as carbon dioxide, are a byproduct of burning fuels. Those warmer temperatures can influence an airplane’s ability to fly because air molecules (分子) spread out more as the air warms. This produces less lift under a plane’s wings, so a plane must be lighter to take off in hot weather than on cooler days.
It can even prove too dangerous for some planes to attempt a take-off. A record of June heat wave in the American Southwest, for instance, caused flight cancellations in Phoenix, Ariz. One airline ‘s planes were cleared to operate only up to 47.8℃. On June 20, Phoenix reached 48.3℃!
Radley Horton is a climate scientist at Columbia University. Two years ago, he and his graduate student Ethan David Coffel studied the effect of warming at four US airports and found that warming of track could triple (使成三倍) the number of days when planes face weight restrictions. Later, they explored the effect of rising temperatures on five types of commercial planes flying out of 19 of the world’s busiest airports. In the coming decades, as many as one to three out of every 10 flights that take off during the hottest time of day could face weight restrictions, they found. In some cases, a typical 160-seat plane would have to remove 4％of its weight. That would be equal to taking a dozen people off the plane, the researchers calculated.
1.How would global warming affect air travel according to the first paragraph?
A.It’ll add to the danger of flying.
B.It’ll increase passengers’ travel cost.
C.It’ll make flying much more comfortable.
D.It’ll encourage more people to travel by plane.
2.What is the second paragraph actually intended to explain?
A.How global warming is happening. B.What decides a plane’s ability to fly.
C.Why global warming affects flying. D.Where greenhouse gases are created.
3.What is the last paragraph mainly about?
A.Reasons for flight cancellation. B.Financial condition related to hot air.
C.The tendency of temperature change. D.Findings of effects of warming on flying.
4.What should be the best title for the text?
A.Air Travel isn’t Recommended during Hot Weather
B.Rising Temperatures May Reduce the Number of Flights
C.Weight Restrictions Are More Common in More Airports
D.Hotter Air May Lead to Planes Carrying Fewer Passengers
高二英语阅读理解中等难度题查看答案及解析
Some researchers claim that people’s personalities can be classified by their blood types
If you have blood type O, you are a leader. When you see something you want , you strive to achieve your goal. You are passionate, loyal, and self-confident, and you are often a trendsetter(标新立异的人)。Your enthusiasm for projects and goals spreads to others who happily follow you. When you want something ,you may be ruthless(不留情面的)about getting it or blind to how your actions affect others .
Aother blood type A, is a social , “people” person . You like people and work well with them . Y ou are sensitive , patient , compassionate , and affectionate .You are a good peacekeeper because you want everyone to be happy .In a team situation , you resolve conflicts and keep things on a smooth course . Sometimes type As are stubborn and find it difficult to relax. They may also find it uncomfortable to do things alone.
People with type B blood are usually individualist who like to do things on their own . You may be creative and adaptable, and you usually say exactly what you mean . Also you can adapt to situations , you may choose to do so because of your strong independent streak. You may prefer working on your own to being part of a team .
The final blood is type AB . If you have AB blood , you are a natural entertainer. You draw people to you because of your charm and easy-going nature .ABs are usually calm and controlled , tactful(圆滑的) fair. On the downside ,though , they may take too long to make decisions. And they may procrastinate, putting off tasks until the last minute.
1.People with type O will do the following things except__________
A．manage businesses B．self-control
C．be considerate D．set the fasion
2.Which of the following is not the feature of type A?
A．Stubborn B．Sensitive C．reserved D．Patient
3.The best profession for a type AB is __________
A．athlete B．peacekeeper C．actor D．country leader
高二英语阅读理解中等难度题查看答案及解析
Many countries are now setting up national parks ________ animals and plants can be protected.
A.when B.which
C.whose D.where
高二英语单项填空中等难度题查看答案及解析