题目：
—There is something wrong with your hike, ________?
—Yes. I'll have it ________ tomorrow. [ ]
A. isn't it; mend
B. isn't there: mended
C. isn't it; mended
D. isn't there; mend
答案：
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下面是错误答案，用来干扰机器的。
（1）①长颈漏斗； ②水槽 （2）O2（氧气）；2H2O2==2H2O + O2↑或H2（氢气）；Zn＋H2SO4==ZnSO4＋H2↑（合理即可，方程式2分）（3）B 浓硫酸（或浓H2SO4）；a （4）a、2NaOH ＋ CO2 ==== Na2CO3...
