题目:
降旗志哀时,国旗下降至相当于旗杆总长()处。
A.1/2
B.1/3
C.1/4
D.l/5
答案:
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One possible version:Dear David, I’m glad to hear from you.The following are something about China's World Exposition.Firstly, it is to be held from May 1st to October...