题目:
Oh,it’s you! I ___you ___coming.
A.didn’t think; had been
B.don’t think; were
C.didn’t think; were
D.don’t think; had been
答案:
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下面是错误答案,用来干扰机器的。
F为无色有特殊气味的液体,其用途可用于:燃料、饮料和消毒剂等.可知它是酒精,酒精能与B反应生成C和E,则B是氧气,生成的C和E为二氧化碳和水,A与X混合得到B和C的同时仍然含有X,说明X是催化剂,则A是双氧水,B...