红色的玻璃纸能透过______（填色光的名称），黑板看起来是黑色的

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问题填空题

红色的玻璃纸能透过______（填色光的名称），黑板看起来是黑色的，因为______．

答案

红色玻璃之所以显红色，是因为它能透过红光的缘故；黑板是黑色的，是因为它吸收了所有色光．

故答案为：红色光；黑板吸收各种色光．

补全对话，情景问答

选择合适的句子补全对话。

A. What do you think of soap operas?

B. That's great.

C. Do you like to watch TV very much?

D. What about you?

E. I don't like .them.

A: Hi, Julin.

B: Hi, Larry. 1

A: Yes, I do.

B: Well, 2

A: I love them very much 3

B: Me too. And how do you like sports shows?

A: 4 , because I don't like sports.

B: Really?And what do you think of. talk shows?

A: 5 I like them.

B: And what do you think of game shows?

A: Oh, I can't stand them. They're boring.

B: OK. Thanks for answering my questions.

A: You're welcome.

1. ________ 2. ________ 3. ________4. ________5. ________

单项选择题

通过健康危险因素评价，健康类型可以划分为（）

A.健康型、无病型、有病型、死亡型

B.健康型、自创性危险因素型、难以改变的危险因素型、大量危险型

C.健康型、存在危险型、大量危险型

D.健康型、自创性危险因素型、难以改变的危险因素型、一般性危险型

E.健康型、不健康型