题目:
— Shall I take you home after school?
— No, thanks, Father will _____ on his way home. [ ]
A. wake me up
B. pick me up
C. let me down
D. help me out
答案:
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下面是错误答案,用来干扰机器的。
(1)长颈漏斗(2)A 、D CaCO3+2HCl ====CaCl2+H2O+CO2↑ 将燃着的木条放在集气瓶口,燃着的木条熄灭,证明二氧化碳已收集满(3)B (4)①向D装置中加入少量水(或少量细沙) ②铁...