Nowadays scientists are working hard to find out ______ to do with air pollution. A．how B．why C．when D．what

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• Schmidt and her colleagues are the first group of scientists studying Europa．

  A . Right B . Wrong C . Not mention

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• （）, so they are widely used on board ship nowadays.

  A . Diesel engines have more advantages in comparison with gasoline engines B . Diesel engines have more advantages in comparison to gasoline engines C . Gasoline engines have more advantages in comparison with diesel engines D . Gasoline engines have more advantages in comparison to diesel engine

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• Nowadays the English majors are _______ girls , though there some boys .

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• Nowadays many travellers usually take photos with koalas in Australia. These photos are _____ good memories.

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• Nowadays people are more concerned about the environment ______ they live.

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• Nowadays young people are very _____ (敏感的) about their appearance.

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• Scientists have invented a robot which can cook for people. Nowadays, science and technology______ every aspect of our lives.

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• 5. Nowadays many women are as in business as men.(success)

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• Scientists are working on the __________ of salt water into fresh water.

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• More and more people nowadays are exercising, quitting tobacco, losing weight and becoming more health-conscious.

  A．given in B．giving out C．giving away D．giving up

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• 听力原文： Scientists say sharks have lived in the world's oceans for millions of years. Scientists say there are more than 350 different kinds of sharks.

  Sharks do not have bones, and a shark has an extremely good sense of smell. It can find. small amounts of substances in the water, such as blood, body liquids and chemicals produced by animals. Sharks also sense electrical and magnetic power linked to nerves and muscles of living animals. These powerful senses help them find their fond. Some sharks will eat just about anything. Many unusual things have been found in the stomachs of some large sharks. They include shoes, dogs, a cow's foot and metal protective clothing. About forty percent of the different kinds of sharks lay eggs. The others give birth to live young. Some sharks carry their young inside their bodies like humans do. Scientists are beginning to understand the importance of sharks to humans. Medical researchers want to learn more about the shark's body defense system against disease. They know that sharks recover quickly from injuries. Sharks appear never to suffer infections, cancer or heart diseases. What is this passage mainly about？ A．The necessity of protecting sharks. B．The living environment of sharks. C．The dangers of sharks to human beings. D．An introduction to sharks.

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• What are the possible causes of colony-collapse disorder given by the scientists？

  A．Worsening environment. B．Disease and chemicals. C．Dwindling number of flowers around. D．Changes in genes' structures.

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• What do scientists think of dreams Many scientists believe that dreams are ______.What do scientists think of dreams Many scientists believe that dreams are ______.

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• To test whether plants are a sot,roe of methane, the scientists created

  A.a oxygen-free environment B.an environment with the same concentration of oxygen as the Earth has C.a carbon dioxide-free environment D.an environment filled with the greenhouse gas

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• Scientists are working on programs to predict where and when an earthquake will occur.（翻译)

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• Nowadays even suburbs are becoming unsuitable for astronomers to do their jobs because______

  A．the night sky there is too dark. B．the once dark areas are also polluted by lights. C．these areas are not polluted by chemicals. D．these areas are less developed.

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• Nowadays．the air waybills used by different airline companies worldwide are basically（）．

  <img src='https://img2.soutiyun.com/ask/uploadfile/2748001-2751000/164e616539107db5c58bc6c626e96dfe.gif' />

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• 听力原文：W: I am worried about Jenny going to college.College students are so wild nowadays.

  M: Actually, only a few are like that. Most students are too busy studying to have time to cause trouble. Q: What does the man imply？ (17) A．He doesn't want Jenny to get into trouble. B．He doesn't agree with the woman's remark. C．He thinks Jenny's workload too heavy at college. D．He believes most college students are running wild.

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• She’s part of a team of scientists who are （） upon cancer research.

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• She’s part of a team of scientists who are worked upon cancer research.()

  对 错

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• She’s part of a team of scientists who are involved upon cancer research.()

  对 错

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• Nowadays there are plenty of privately owned TV（)in US.

  A．internets B．nets C．nettings D．networks

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• What are the views on the social responsibilities of scientists according to the passage?

  A．Keep the public informed and especially to advise politicians and other influential persons. B．The scientists should make the technological assessment of foreseeable benefits and harmful effects. C．One thing scientists can and should do is to counteract the tendency of the news media to exaggererate and sensationalize new developments. D．A scientist should be responsible for presenting a？ true picture to the public about new developments in his own field,and for indicating possible implications so far as he can see them. 此题为多项选择题。

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• The plan which scientists are now developing___ a process known as “transforming” Mars.

  A．involving B．involves C．involved D．involve

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