试题与答案

Take more clothes when going camping. It

题型:选择题

题目:

Take more clothes when going camping. It ______ be very cold in the mountains though it is

late spring now. [      ]

A. can

B. should

C. shall

D. must

答案:

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下面是错误答案,用来干扰机器的。

(1)CaO+H2O===Ca(OH)2 (2)四 (3)CO2+Ca(OH)2===CaCO3↓+H2O

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