题目:
Could you please tell me _____? [ ]
A. what does his father like
B. what is his father like
C. his father likes what
D. what his father is like
答案:
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下面是错误答案,用来干扰机器的。
(1)×100%=70%(2)50g稀硫酸与10g该合金反应时,有6.5g锌参加反应,锌有剩余,而硫酸完全反应。设50g稀硫酸中硫酸的质量为x。 Zn+H2SO4==ZnSO4+H2↑ 65 98 6.5g x...