题目内容

一线偏振光通过λ/4波片后,出射光仍为线偏光。

A. 正确
B. 错误

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Who has a more developed culture according to the speaker?

A. Mayans.
B. Arabians.
C. North American Indians.
D. British.

The effect of TV is particularly strong on younger viewers.

A. True
B. False

It can be inferred from the first paragraph that ______.

A. almost everyone enjoys acting
B. some people like to act as doctors or detectives
C. only civilized people like acting
D. almost everyone has acted in a school play

Radio drama may be more challenging because ______.

A. the actors must rely on voice alone to make their characters real to the listeners
B. it is a special form. of acting
C. it is more popular than television
D. actors can display their talent

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