6. They retire from their jobs before the age of sixty-five. A. 错误 B. 正确 ...

10. If cloned animals could be used as organ donors, (). A. people don’t have to worry about cloning twins for transplants B. raising animals such as pigs can help solve the problem C. the human body attacks and destroys tissue from ot...

5. Many sociologists believe that (). A. conveniences brought about by modern appliances have also weakened the bonds of family life B. we are close to crowds but we feel more alone than before C. one needs a partner close to him or her...

18. The school is strongly against () between boys and girls. A. friendship B. friends C. flirtation D. help ...

13. Jenny is not in the()for going to the party tonight. A. temper B. condition C. mood D. health ...

8. A ()arose among union members about the terms of the new contract. A. negotiation B. discussion C. dispute D. hatred ...

3. This is the()piano on which the composer created some of his greatest works. A. true B. original C. real D. genius ...

7. The volunteers just greeted each other on the first and ignored each other for the rest days. A. 错误 B. 正确 ...

2. Each child draws a different picture in western schools. A. 错误 B. 正确 ...

7. Global warming results from (). A. improper farming B. the burning of fossil fuels C. the increase in greenhouse gases D. the satellite rotation ...