遇水燃烧物质的类别多，遇水生成的可燃气体不同，其危险性也有所不同。（）

What would you do if a stranger gave you some medicine and it would keep you slim or help you do well in exams? Would you take it?

Students at Shenzhen Luohu Foreign Language Middle School have learned to keep themselves safe by saying “no”. In fact, what those strangers want to give them are drugs (毒品) . Drugs are dangerous to your health!

“Because teens don't know much about drugs, they might want to try them,” said Zhang Dongsheng, the director of Shenzhen Drug Control Office.

Now, many schools arrange courses or organize some activities to help students know about drugs.

Liang, 16, was a good student before trying drugs. One day, some old friends told him it would be fun. After taking drugs only once, he found it very hard to stop. Liang began to spend all his time and money on drugs. Soon, he stopped going to school and started stealing. In the end, he was put in prison.

In China, taking drugs is becoming a big problem for teens. According to a survey, about one million people in China were using illegal drugs last year, and 72% of them were young people. Worse still, there are about10,000 drug users under 16 now.

Zhang has some good advice on staying clean. He said, “Drugs are dangerous. Never try them, even if you’re curious! It is the most important for you to keep safe and healthy.”

小题1:Teens wants to try drugs because _________ .

A．they are 18 years old

B．they aren't curious about drugs

C．they have enough money

D．they don't know about the harm of drugs小题2:From Liang's story, we can know that it’s _________ to give up drugs even if one tries only once.

A．easy

B．hard

C．foolish

D．possible小题3:According to a survey, about _______ young people in China were using illegal drugs last year.

A．1,000,000

B．100,000

C．10,000

D．720,000小题4:What does the phrase “staying clean” here mean?

A．Being clean.

B．Keeping clothes clean.

C．Staying away from drugs.

D．Wearing clean clothes.

下列属于剖宫产术禁忌症的是（）。

A.胎盘早剥

B.前置胎盘

C.头盆不称

D.死胎

E.胎儿宫内窘迫

脑脊液抽出后1～2h有明显的凝块或沉淀出现，则首先考虑为 （）

A.化脓性脑膜炎

B.脊髓灰质炎

C.结核性脑膜炎

D.蛛网膜下腔阻塞

E.穿刺出血

根据JGJ196-2010《建筑施工塔式起重机安装、使用、拆卸安全技术规程》规定，塔式起重机在哪些情况下严禁使用？

急性坏死型胰腺炎时，下列哪项检查结果正确（）

A.血清淀粉酶均升高

B.血清脂肪酶早期升高

C.血糖升高

D.血钙升高

E.血白蛋白升高