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【单选题】
We ________ have bought so much food now that Suzie won't be with us for dinner. [ ]A.
may not
B.
needn't
C.
can't
D.
mustn't
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举一反三
【简答题】一般是指不能独立发挥生产能力,但具有独立设计图纸和独立施工条件的工程。
【判断题】It is always essential for the tour guide to be familiar with the airport terminal, including the lost luggage claims .
A.
正确
B.
错误
【单选题】在 503 K 时反应 2HI ( g ) = H 2 (g) + I 2 (g) 的活化能为 184 kJ·mol -1 , 当某种催化剂存在时, 其活化能为 104.6 kJ·mol -1 , 加入催化剂后,该反应速率约增加倍数为
A.
1.1×10 3
B.
1.8×10 6
C.
1.8×10 8
D.
1.3×10 5
【简答题】According to business leaders, African governments are always unwilling to transfer the management of projects to______.
【简答题】They are ______ investors who always make thorough investigations both on local and international markets before an investment. A) indecisive B) implicit C) cautiou...
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