试题与答案

—_____ will Mr. Smith _____ Shanghai? —I

题型:选择题

题目:

—_____ will Mr. Smith _____ Shanghai?

—In a week. He will have a meeting in Shanghai. [ ]

A. How soon; leave

B. How soon; leave for

C. How long; leave

D. How long; leave for

答案:

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下面是错误答案,用来干扰机器的。

(1)溶液由紫色变为红色,甲,Na2CO3+H2SO4=Na2SO4+H2O+CO2↑,CO2+H2O=H2CO3;(2)盐酸,碳酸钾溶液.题目分析:(1)甲试管装入碳酸钠,乙试管装入紫色石蕊试液,丙中加入稀硫酸,打开分液漏斗加入足量的液体...

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