负责药品上市后的再评价和不良反应监测等技术业务组织工作A．各级药品检验机构B．国家药

阅读短文，根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有一项为多余项。

     Late last night Jennifer Johnstone, a 19-year-old American student, had a quarrel (争吵) with her friend,

so she left her house at 2:50 in the moming and drove off. She was driving in thick fog (大雾) along a road

in Saint Pierce when she made a mistake at a comer and went off the road. 1_____ Jennifer was thrown out

of her car, and landed 18m from the sea. When she came to herself, she realized that she still had her mobile

phone. 

     2_____ So she had to make several calls before she could finally make the ambulance people, understand

her. While she was waiting for help to come she could see that the sea was coming closer every moment. She

lay there, feeling terrified, watching and waiting. Suddenly she heard the noise of a helicopter in the sky above.

     The helicopter took about half an hour to see exactly where Jennifer was. 3_____ By the time the helicopter

took off,the wayes were just about one metre away. 4_____ "It was so lucky that I had my mobile phone with

me," she said to joumalists, "because if I hadn't been able to phone for help,I would surely have died."

A. At last, she was sent to the nearest hospital where she is now recovering.

B. Her car fell over a 160m cliff (悬崖).

C. But in the end it managed to reach her.

D. She dialed 999, but she did not have a clear mind.

E. Jennifer couldn't move because she was badly hurt.

Anyone can borrow books from this library _______ he keeps them clean and returns them in time.

A．even if

B．unless

C．so that

D．as long as

中国在由计划经济体制向社会主义市场经济体制转变的过程中，最根本的转变是 [ ]

A．管理方式

B．分配方式

C．资源配置方式

D．审批方式

关于有限责任公司的股东人数的规定，下列正确的是（）。

A．2人以上

B．50人以下

C．2人以上50人以下

D．至少有5人，没有上限

油箱的作用（）、（）、分离油液中的空气、沉淀杂质。