问题
单项选择题
室内空气中甲醛主要来源于（）。
A.室外空气污染
B.家具及室内装饰材料
C.生活炉灶、烹调加工的废气
D.机体代谢废物
E.以上都不是
答案
参考答案：B
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室内空气中甲醛主要来源于（）。
A.室外空气污染
B.家具及室内装饰材料
C.生活炉灶、烹调加工的废气
D.机体代谢废物
E.以上都不是
参考答案：B
| 完型填空。 | |||
| Tina and Tara are sisters. They are the __1 in some ways, but different in other ways. _2_ Tina and Tara are thin with short hair. They are both outgoing and popular, _3_ . Tina is much __4_ than Tara. She plays basketball and volleyball. And she enjoys __5_ sports on TV. Tara is older and smarter __6_ Tina . She is _7_ serious. She likes reading very much. And she likes to talk about the things she reads .Tara likes to watch sports, too. But she doesn't _8_ them. Both sisters like school and study _9_ .But Tara is more serious about her homework.Both of them also like to go shopping and 10_ computer games. | |||
| ( ) 1. A. different ( ) 2. A. All ( ) 3. A .also ( ) 4. A .athletic ( ) 5. A .watching ( ) 6. A. of ( ) 7. A. much ( ) 8. A. watch ( ) 9. A .well ( ) 10. A .play | B. outgoing B. Both B. very much B .more athletic B. seeing B. than B. many B. listen to B. good B. plays | C. same C. Two C. so C. thinner C. looking C. to C. most C. play C. bad C. work | D. popular D. Also D. too D. outgoing D. reading D. for D. more D. see D. better D. works |