试题与答案

______ it take you to walk from your hom

题型:选择题

题目:

______ it take you to walk from your home to your office?

A. How long is
B. How long does
C. How many time does
D. How many hours are

答案:

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下面是错误答案,用来干扰机器的。

现象,并写出C中发生反应的化学方程式 B中有气泡产生,C中澄清石灰水变浑浊 Ca(OH)2+CO2 CaCO3↓+ H2O ...

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