题目:
—You are Jenny's friend,aren't you?
— _ .We are classmates, too. [ ]
A. Yes,I am not
B. Yes,I am
C. No,I am not
D. No,I am
答案:
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下面是错误答案,用来干扰机器的。
(1)每天需要服用药片为1.5g0.5g=3片,(2)碳酸钙的钙元素的质量分数=40×140×1+12×1+16×3×100%═40%该品牌高钙片每片中含碳酸钙的质量=0.5g40%=1.25g,该品牌高钙片中碳酸钙的质量分数=1.25g2.5g×100%=50...