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【简答题】
在稀有气体中，最外层电子构型与其他稀有气体不同的元素是（）。空气中含量最高的稀有气体是（）。在已合成出的稀有气体化合物中，以（）这种稀有气体的化合物为最多；第一个合成出的稀有气体化合物是（）。
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举一反三
【单选题】—How long does it take you to get to your company? — _ . [ ]
A.
Three weeks
B.
It takes 25 minutes
C.
I don't know
D.
Depend on you
【简答题】Model 1: People spend years really knowing who somebody is. Key: It takes people years to really know who somebody is. Model 2: I spent three days writing the novel. Key: It took me three days to writ...
【单选题】Mark Twain once said it takes more than three weeks to prepare an ( ) speech.
A.
spontaneous
B.
impromptu
C.
successful
D.
difficult
【简答题】A. Rewrite the following sentences after the models, using the models "It takes (somebody) time to do something." Model 1: People spend years really knowing who somebody is. It takes people years to r...
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