(   ) 12. —How clean your classroom is!

―Thank you!Our classroom        after school every day.

   A. cleans   B. is cleaned   C. cleaned   D. clean

(   ) 13. ―        ask the policeman for help?

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    3. a most unusual woman         

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A The food we eat seems to have a great influence on our health. Although science has made big steps in making food more fit to eat,it has,at the same time,made many foods unfit to eat. Some research has shown that perhaps eighty percent of human illness is caused by food and forty percent of cancer is caused by food as well. That food can cause illness is not a new discovery. In 1945,some researchers realized that things that are commonly used to keep color in meat and other food additives (添加劑) caused cancer.

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   B. to make food more unfit to eat

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   D. to improve the color and taste of the food

(   ) 34. The underlined word  wrappings  means        in Chinese.

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59. 總的來說，他是個勤奮的學(xué)生。

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(   ) 10. ―Mom,I feel like watching TV tonight. Can I do homework tomorrow?

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(   ) 20. ―Do you mind my closing the window?

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