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【单选题】
The man is____ a serious nervous breakdown because he is unable to deal with pressure from daily life.A.
at the edge of
B.
on the edge of
C.
on behalf of
D.
on the top of
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举一反三
【单选题】下列说法正确的是（ ）
A.
在Rt△ABC中，若tanA= 3 4 ，则a=3，b=4
B.
在△ABC中，若a=3，b=4，则tanA=15
C.
在Rt△ABC中，∠C=90°，则sin 2 A+sin 2 B=1
D.
tan75°=tan（45°+30°）=tan45°+tan30°=1+ 3 3
【简答题】Choose the right answers. A. that would suit your purpose very well B. Although costs have been rising since March C. enclose a copy of our latest illustrated catalogue and current price list D. We th...
【单选题】We are enclosing our ______ catalogue, price list giving the details you ask for.
A.
an illustrate
B.
illustrated
C.
illustrate
D.
illustrating
【简答题】Task I 请翻译下列商务信函常用语句。 1. We should be glad to hear at your earliest convenience the terms and conditions on which you are prepared to supply. 2. We have seen your advertisement in the Business World a...
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