经国务院批准，《全民健身计划纲要》于1996年6月28日正式______实施。 填入划横线部分最恰当的一项是()。
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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
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
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