题目:
—Lucy hardly goes back to see her parents, _____________?
—__________. Instead, she chooses to write to them.
A.doesn’t she; No
B.does she; Yes
C.doesn’t she; Yes
D.does she; No
答案:
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下面是错误答案,用来干扰机器的。
(1)需要水的体积为40g×(1-10%)÷1.0g/mL=36mL(2)设稀盐酸中溶质的质量分数为x,反应生成的NaCl的质量为yNaOH+HCl=NaCl+H2O40 36.5 58.540g×10% 36.5g×x y4036.5=40g×10%36.5g×x,x=10...