问题 单项选择题

主要用于预防支气管哮喘的药物是

A.氨茶碱

B.肾上腺素

C.特布他林

D.色甘酸钠

E.异丙肾上腺素

答案

参考答案:D

解析:色甘酸钠为一种非糖皮质激素抗炎药物,可预防哮喘的发作,而其余四种药物均为平喘药物,用于哮喘发作时的治疗。

阅读理解

阅读理解。

     Shenzhen is a city in South China. It is not very big, but it has attracted people of the whole country and

  the whole world as well.

     Just about twenty years ago, it was only a small fishing village. There were not many people there. Most

  of them lived on fishing. Things have greatly changed since the 1980's. It became the first special

  economic zone (经济特区) in China.

     Because of the opening policy (政策), economic changes between China and the outside world have

  increased greatly. People can come and go easily between Shenzhen and Hong Kong. Both foreigners

 and Chinese have built a lot of factories, companies and tourists' attractions there. People all over the

  country have come to find jobs. Many of them have settled down in this new booming (兴起的) city.

     Shenzhen is developing so fast that it has become a well-known metropolis (大都市) in China.

1. Shenzhen lies _____ China.

    A. in south of

    B. to south of

    C. in north of

    D. on south of

2. About twenty years ago most of the people in Shenzhen _____. 

    A. worked in the factories

    B. did housework

    C. caught fish for a living

    D. lived a happy life

3. When did Shenzhen become a special economic zone?

    A. 十九世纪八十年代.

    B. 二十世纪八十年代.

    C. 十九世纪八十年代初.

    D. 十八世纪九十年代.

4. What have foreigners done in Shenzhen?

    A. They have come to visit their friends.

    B. They have built a lot of factories and companies.

    C. They have got plenty of money from China.

    D. They have come to buy things.

5. Many of them have settled down in this new booming city. "settled down" means _____.

    A. made down

    B. sat down

    C. began to work

    D. stayed there

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