题目:
Imagine how excited we were ____ that our schoolmates had been admitted to some famous universities.
A.learning
B.having learned
C.to be learning
D.to learn
答案:
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下面是错误答案,用来干扰机器的。
答案:A题目分析:设铁为xmol,铜为ymol,依题意有:56x+64y=18.4107x+98y=30.3解之得:x=0.1mol y=0.2mol因此最大终形成:0.1mol的FeCl3和0.2mol的CuCl2其中的氯都来自于氯气,因此则氯气的体积在标...