问题
单项选择题
土粒密度的单位是：
A．kN/m3
B．kg/m3
C．无
D．kPa
答案
参考答案：C
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土粒密度的单位是：
A．kN/m3
B．kg/m3
C．无
D．kPa
参考答案：C
There are lots of rules at Selina’s school. She agrees with some __1__ them. For example, they can’t arrive ___2___ , they can’t run in the hallways, and they can’t eat in class. All___3___ rules are okay because they’re reasonable(合情合理的). But there are some rules Selina___4___agree with. For example, at her school they have to wear a uniform and they can’t wear jeans. But she thinks jeans are___5___because they’re comfortable. In school, they can’t listen to music in art class. Selina doesn’t agree with this rule. She thinks ___6____ music in art crass is okay. Selina___7___ has to follow some rules at home. For example, ___8____ she wants towatch TV, she has to finish her homework first. And she can’t go out with her friends ___9___school nights, that is, from Monday to Friday, she also has to clean her room ___10___week. Luckily, she doesn’t have to take out the trash（垃圾）. She hates it.
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