A. Calcium B. Zinc C. Copper D. Sodium

5. If you put a shovel (铁锨)in a damp place, it will there.

　A. rust B. form an oxide C. not rust D. keep the place dry

6. Iron rusts in .

A. dry air B. air-free water C. ordinary air D. ordinary water

7. According to Passage B, we know that the "air-free water" probably means .

A. air with a lot of water B. air without water

　C. water with plenty of air D. water without air

课后反思：

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课后训练

阅读理解

　　If you exhibit positive characteristics such as honesty and helpfulness，the chances are that you will be thought as a good­looking person，for a new study has found that the perception(认知)of physical attractiveness is influenced by a person's personality.

　　The study，which was led by Gary W．Lewandowski，has found that people who exhibit negative characteristics，such as unfairness and rudeness，appear to be less physically attractive to observers. In the study，the participants viewed photographs of opposite­sex individuals and rated them for attractiveness before and after being provided with information about their personalities.

　　After personality information was received，participants also rated the probability of each individual's becoming a friend and a dating partner. Information on personality was found to significantly change the probability，showing that cognitive(认知的) processes modify(修改) judgments of attractiveness.

　　"Thinking a person as having a desirable personality makes the person more suitable in general as a close relationship partner of any kind，" said Lewandowski.

　　The findings show that a positive personality leads to greater expectation of becoming friends，which leads to greater expectation of becoming romantic partners and，finally，to being viewed as more physically attractive. The findings remained consistent regardless of how "attractive" the individual was formerly thought to be or of the participants' current relationship status.

"This research provides a positive outcome by reminding people that personality