乙方的违约行为导致工程受到损失，甲方采取措施减损，导致损失减少到3万元，但甲方支出相

阅读短文，从A-D 中选出恰当的句子填入文中1-4 处，然后回答第5 题。

       What would you do if a stranger gave you some medicine and he said it would keep you slim or

help you do well in exams? Would you take it?

       Many middle school students have learned to keep themselves safe by saying "no".  1  .Drugs are

dangerous to your health!

       Because most of teens don't know much about drugs, they might want to try them. Liu, 16, was a

good student before trying drugs.  2   .He decided to have a try. After taking drugs only once, he found

it very hard to stop. Liu began to spend all his time and money on drugs. Soon, he stopped going to

school and started stealing (偷).  3   .   

       In China, taking drugs is becoming a big problem for teens. According to a survey, about one million

people in China are using illegal drugs now, and about 74% of them are young people.   4  

       Drugs are dangerous. Never try them, even if you're curious! It is the most important for you to keep safe and healthy.

A. In the end, he was put in prison.

B. In fact, what those strangers want to give them are drugs (毒品).

C. What's worse, there are about 10,000 drug users under 16 now.

D. One day, some old friends told him it would be fun.

5. According to a survey, about        young people in China are using illegal drugs now.

A. 1,000,000          

B. 100,000

C. 10,000              

D. 740,000

关于Chiari畸形的描述，错误的是()

A.后脑先天发育异常 

B.小脑扁桃体过长、变形，经枕骨大孔伸入椎管内 

C.延髓及第四脑室亦向下延伸 

D.常伴发脑积水与脊柱裂 

E.ChiariI型常伴有脊髓脊膜膨出

简述天文辐射及其特点。

增值税纳税人兼营应税劳务与非应税劳务的，如果不分别核算或者不能准确核算其各自销售额的，其非应税劳务应与应税劳务一并缴纳增值税。( )

缢死一定不可逆转的。