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1）Candidates try to project a strong leadership image. （para.4）
2）Whether voters accept this image，however，depends more on external factors than on a candidate's personal characteristics. （para. 4）
3）A year later，with the nation's economy in trouble，Bush's approval rating dropped below 40 percent.
4）Candidates are particularly concerned with winning the states which have the largest population.
5）Clinton received only 43 percent of the popular vote in 1992，compared with Bush's 38 percent and Perot's 19 percent.
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1）The use of animals has been central to the development of anaesthetics.
2）Animal research is irrelevant to our health and it can often produce misleading results.
3）People and animals are油缸升降 different in their reactions to drugs and in the way their bodies work.
4）It would be completely irresponsible and unethical to use drugs on people that had not been thoroughly tested on animals.
5）The eventual aim of computer modeling is to reduce the number of animals used in experiments.
6）Many other new techniques are now available that enable more research to be done in the test tube to see if chemicals produce harmful biological effects.
7）The number of animals used in laboratory tests has declined over the last 20 years.
8）This is partly due to alternatives and partly to the fact that experiments are better designed so fewer need to be used.
9）Professor David Morton of the department is involved in animal research and is concerned with redu1、请在使用之前仔细浏览本说明书cing animal suffering as much as possible.
10）This includes keeping them in more suitable cages.
11）In the US，one experiment in nerve regeneration involves cutting a big nerve in a rat's leg.
12）When it comes to research into heart disease and its effects on the body，or diseases of更要重视利用 the brain f由西南铝冷连轧负责试制的特薄3104罐身料发往海外工厂展开试冲罐时出现了问题or example，we do not have adequate substitutes for the use of animals.
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1）At its best，daydreaming was considered a compensatory substitute for the real things in life.
2）There are always those who would substitute fantasy lives for the rewards of real activity.（para.2）
3）Most people suffer from a lack of daydreaming rather than an excess of it. （para.2）
4）Not only are they less able to deal with the pressure of day-to-day existence，but also their self -control and self-direction become endangered.丽水订做工作服