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【简答题】
As television brings some unfavorable influence on people, some suggest that we should do away with television. Since you consider television as an indispensable part of your life, you should write in response to the suggestion. Please include the following points in your essay: 1) Television provides us with the information of the world. 2) Television helps us to improve ourselves. 3) Television offers entertainment. You should write 160-200 words on ANSWER SHEET 2.
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举一反三
【单选题】关于声现象，下列说法正确的是（ ）
A.
诗句“不敢高声语，恐惊天上人”中“高”是指声音的音调高
B.
“这首歌调太高，我唱不上去”中的“高”是指响度大
C.
“闻其声知其人”说明可以根据音色来判断说话者
D.
判断音乐是哪种乐器演奏依据的是声音的音调
【简答题】生产注射用水的原水一般是 ,纯化水包含 、 ;一次蒸馏水经过 生产注射用水,其目的是去除 ; 也可用于注射用水生产。