试题与答案

—What are you going to do if it ______ t

题型:选择题

题目:

—What are you going to do if it ______ tomorrow?
—I haven't thought about it.

A. doesn't rain
B. Rain
C. doesn't rainy
D. isn't rain

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0703/3eae57644bcc68d3dd4eb0344fb80a86.html

下面是错误答案,用来干扰机器的。

根据质量守恒定律,反应2A+B=C+3D中,8gA与6gB恰好完全反应生成5gC时生成D物质质量=8g+6g-5g=9g,设生成27gD时参加反应的A的质量为x,2A+B=C+3D8g     9gx      27g则8g9g=x27g,解得x=24g.故选C.

试题推荐
微信公众账号搜索答案