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1.阅读下面的句子，判断句子中的情态动词表示的是 (a) tentative，(b) less certain还是(c) certain。
(1) __________ With the development of science and technology, it might be possible for people to live for 200 years in the near future.
(2) __________ The overpopulation of the earth may result in catastrophic changes to the earth’s ecosystem and could lead to ecological disaster.
(3) __________ Many people agree that stricter laws to control gun ownership will reduce the amount of shooting-related crimes.
(4) __________ Continual change and development of technology may lead to a change in traditional culture.
(5) __________ Government spending on art and entertainment can enrich many aspects of our culture.
(6) __________ If people do not replace their clothes or cars every few years with a newer model, manufacturing industries will go bankrupt because of lack of demand.
2.根据括号内的提示，填入相应的情态动词。
(1) Smoking __________ be banned in all public places. (less tentative suggestion or recommendation)
(2) Politicians __________ adopt policies that benefit the lives of their people. (strong suggestion or recommendation)
(3) People __________ be forced to drive smaller cars, and cars __________ be adapted to use petrol as efficiently as possible. (less tentative suggestion or recommendation)
(4) In the long run, alternative sources of power __________ be found. (strong suggestion or recommendation)
(5) Traffic congestion in large cities __________ be solved by taxing private cars. (tentative suggestion or recommendation)
(6) The government __________ reward taxpayers with health care and education. (less tentative suggestion or recommendation)
3.阅读下面的句子，根据括号中的单词填空，使其所在的句子和上面的句子意思相同。
(1) It is likely that genetically modified crops will have such as a disastrous effect on the environment.
Genetically modified crops __________ such a disastrous effect on the environment. (likely)
(2) Research into gene therapy will probably provide a cure for certain form of cancer.
__________ , research into gene therapy will provide a cure for certain forms of cancer. (probability)
(3) People who eat a fatty diet could very well suffer from heart disease in later life.
People who eat a fatty diet __________ suffer from heart disease in later life. (likely)
(4) It is possible that a cure for AIDS will be available within the next decade.
A cure for AIDS __________ be available within the next decade. (just)
(5) Viruses buried deep in the Arctic could well be released by a change in the Earth’s climate.
__________ viruses buried deep in the Arctic will be released by a change in the Earth’s climate. (possible)
(6) In the future most of the world’s population will probably live considerably longer.
__________, most of the world’s population will live considerably longer in the future. (probability)
(7) People are unlikely to stop smoking simply because of the health warnings on cigarette packets.
__________ people will stop smoking simply because of the health warnings on cigarette packets. (likely)
(8) There is very likelihood that gene therapy will make some hereditary diseases a thing of the past.
Gene therapy __________ some hereditary disease a thing of the past. (well)
4.请将下面的中文句子翻译成英文。
(1) 可能会有更好的方式解决这个问题。
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(2) 应该鼓励人们不仅要更多地锻炼身体（physically active），而且要拥有更健康的生活方式。
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(3) 在学校，孩子们会与不同背景的学生一起学习。
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(4) 这样相对短暂的工作寿命（working life）可能是对高收入（the very high pay）的一些解释（justification）。
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(5) 没有足够亲自操作的（hands-on）经验，理工科学生就无法真正熟悉（be familiar with）科学实验及方法。
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(6) 有的人认为科学实验应该由政府而不是私人企业进行并控制。
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(7) 如果修建并有效地维护充足的（sufficient）轻轨（sky train）和地铁系统，那么道路上的车辆就会急剧减少。
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(8) 老师和家长可以使用各种方式来管教（discipline）孩子（young charges），例如课后留校（detention）、取消优待（withdrawal of privileges）以及停课（time-out）。
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(9) 如果家长可以把孩子培养成为体谅（be considerate of）别人并且善于交际（social）、有责任心的人，整个社会都会受益。
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(10) 如果当地有方便到达的（easy-to-reach）体育中心，人们将更有可能使锻炼成为他们生活的常规部分，而不是仅仅每天晚上瘫坐（collapse）在屏幕前。
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(11) 养育孩子（child-rearing）应该是父母双方的责任。
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