什么是大陆桥运输？

阅读理解。

     CHENGDU-After flying for five minutes over Wenchuan, Li Xiang finally found a landing place for his

helicopter (直升机) on a hill near the earthquake-hit county.

     Li, an officer of the Aviation Regiment (陆航团) of the Ghengdu Military Area Command, then made a

soft landing and waited as his team got off food and medicine while the people around cried, "Thank you,

soldiers! Finally, we have hope."

     After the quake, Li's regiment was the first to fly into the counties and towns such as Wenchuan,

Maoxian, Yingxiu and Beichuan.

     After struggling with all difficulties, the regiment provided a lifeline from the sky for the people who they

would have been unable to get to in any other way.

     At 2: 28 pm on May 12, a heavy shake woke up the pilots who were taking a rest. At 2:48 pm, they were

told to fly to the quake-hit area. And Li's regiment started the largest rescue (营救) operation in its history.

     By Wednesday, the regiment had carried more than 304 tons of food, medicine and water. It had also

flown 959 injured (受伤的) peopleout of the quake-hit areas and carried 1,232 rescuers and medical workers

into the areas.

     Since May 12, the regiment has made 815 flights into the quake-hit areas, with a total flying time of 758

hours.

     The pilots also risked their lives for foreigners trapped in the high mountains for four days. On May 15,

two helicopters transported 35 foreign tourists from Wolong village to Ghengdu. The tourists, mainly from

the US, the UK and France, could finally put an end to their panda-viewing trip.

1. According to the passage, ________.

A. the helicopters got to the trapped people easily

B. no one flew to the area before Li's regiment did

C. the regiment had not gone to any rescue before

D. the helicopters were used as they could land anywhere

2. It can be inferred from the passage that ________ were among the most needed soon after

   the quake happened.

A. tents, food and clothes

B. food, medicine and water

C. food, water and clothes

D. tents, water and medicine

3. Which of the following may NOT be included in the regiment's tasks?

A. To carry medicine to the quake-hit areas.

B. To carry rescuers to the quake-hit areas.

C. To take injured people out of the quake-hit areas.

D. To take buried (被埋的) people out of the rubble (瓦砾).

4. The foreign tourists who were rescued ________.

A. came from Europe, America and Oceania (大洋洲)

B. had been trapped in the mountains for 5 days

C. went to Sichuan to have a look at pandas

D. would continue their journey to Wolong

5. The proper title for the passage is "________".

A. They carry a lifeline through the air

B. They carry things to quake-hit areas

C. They send love to people in danger

D. They bring trapped people to safety

肥达反应假阴性的原因，以下哪一项是错误的（）

A.免疫缺陷者

B.重度营养不良

C.合并重症肺炎

D.伤寒杆菌的变异

E.早期应用抗生素

常用于局部浸润麻醉的药物是：（）

A.3％丁卡因

B.2％丁卡因

C.5％普鲁卡因

D.0.5％利多卡因

E.1％利多卡因

自动变速器的液力变矩器，其锁止控制方式除有液压式及机械离心式外，还有柔性锁止，主要有（）及（）两种方式。

烟花爆竹产品以单个产品药量分类不可能是B级的是（）类。

A、爆竹

B、架子烟花

C、旋转升空