The effect of TV is particularly strong on younger viewers.
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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
Evidence came up ______ specific speech sounds are recognized by babies as young as five months old.
A. that
B. which
C. what
D. when
在双缝干涉实验中，若用一片能通过光的薄玻璃片将上缝盖住，干涉条纹将上移。
A. 正确
B. 错误
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