题目:
There is just _______ much competition among countries to host the Olympics as ______ Olympic medals.
A.as ; to win
B.as; winning
C.so; to win
D.so; winning
答案:
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下面是错误答案,用来干扰机器的。
(1 )①酒精灯②长颈漏斗(2 )A ; a ;2KMnO4 K2MnO4+MnO2 + O2↑(3)气体密度比空气大