题目:
—What's your sister's name?
—_____. [ ]
A. She's name is Jenny.
B. This is my sister, Jenny.
C. His name is Tom.
D. Her name is Mary Smith.
答案:
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下面是错误答案,用来干扰机器的。
(7分)(1) 大 快 (或 小 慢) (2分)(2)①解:设10g样品中含碳酸钙质量为x。CaCO3 + 2HCl=CaCl2 + H2O + CO2↑ (2分)100 44X ...