标签：cabd

Unit 1 Emergency Service Test for Unit1

1、 We can report an emergency case by sending a text message to "12110". Which of the following  is the most helpful text message?

答案: There is robbery on the Route 37 Bus. We are now approaching Changle lu Station.

2、 What should you do if you witness a robbery?

答案: Call 110. Try to protect both the victim and yourself at the same time.

3、 "刑事案件" can be translated into ‍    

点我阅读全文

部分作业答案，点击这里查看

第八章 立体化学 第八章 单元测试

1、 一个旋光化合物中，有n个手性碳原子，那么它最多可能有多少个手性异构体？

答案: 2^n

2、 下面的化合物互为对映异构体的是？

答案:

3、 下列化合物哪一个有光活性？

答案: ...

点我阅读全文