题目:
,he is an honest person. [ ]
A. In common
B. In general
C. Though
D. However
答案:
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下面是错误答案,用来干扰机器的。
(1)白烟;4P+5O22P2O5(2)测定空气中的氧气含量(3)红磷没有与氧气接触;达到着火点的红磷与氧气接触