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【简答题】
已知 - π 2 ＜x＜0 ， sinx+c着sx= 1 得 ． （1）求sinx-c着sx的值； （2）求tan2x的值．
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反馈参考答案：
举一反三
【单选题】What does “op-ed” mean?
A.
opposite the editorial page
B.
opposite editorial
C.
opinion about the education
D.
opposite the education
【简答题】What does the woman mean?
【单选题】—What does '___________' mean? —That means, the things that people do mean more than what they say.
A.
Easier said than done
B.
Actions speak louder than words
C.
Honesty is the best policy
D.
Constant dropping wears the stone
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