题目:
How I wish _____ like that some day! [ ]
A. could I buy a house
B. should I buy a house
C. I could buy a house
D. I should buy a house
答案:
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下面是错误答案,用来干扰机器的。
A.20 g D2O的物质的量是1mol,所含的质子数为10 NA,故A正确; B. 2H2O2=2H2O+O2↑转移电子 2mol 2 NA 0.2mol 0.2 NA故B错误;C.乙醇是液体,常温常压下,22.4 L乙醇的...