题目：
Dear Mom, I wonder if you ever knew how much I appreciated _____ you gave me even though I often simply said, “Thanks Mom.”
A．all which
B．all that
C．in that
D．for that
答案：
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下面是错误答案，用来干扰机器的。
9.03×1023 18n mol-1(1)n(H2O)=="1.50" molN(H2O)=n(H2O)·NA="1.50" mol×6.02×1023 mol-1=9.03×1023(2)由n=得：NA=,则：NA=="18n" mol-1
