问题 单项选择题 A1/A2型题

条件致病菌指的是()。

A.恢复期患者排泄的病原菌

B.正常时不存在于机体内的非致病菌

C.从外部侵入,但尚未引起疾病的病原菌

D.正常时存在于机体内而不引起疾病的细菌

E.以上都不是

答案

参考答案:D

阅读理解

阅读理解。

     In London, there has always been a main problem. In order to solve this problem, the government has

decided to have a bike revolution (革命). It has decided to provide 6,000 bikes for the people to rent. The

government encourages local people to ride bikes in order to solve the traffic problem.

     More than 12,000 people have agreed to the idea. Some of them ask for more than one key. Although

there are not enough bikes, an official (官员) from the government said that they would find some ways to

deal with such a shortage.

     Local people can get these bikes at special docking stations (停靠站).There are about 315 docking

stations across the city. About 12,450 keys have already been handed out to the local people, but only 6,000

keys can be used now.

     Let's see the cost you need to pay. One key costs £3, and the cost of using the bike is £1 for an hour.

The cost per hour increases as the hours increase, so it will cost £50 if you rent the bike for 24 hours.

     The official from the government said they also needed to face a lot of problems, for example, some bikes

may be lost. But they said they would try their best to solve all the problems to make sure the success of the

program.

1. In London, the government has decided to provide bikes for

   local people to rent in order to solve _________.

A. the traffic problem

B. the population problem

C. the family problem

D. the health problem

2. About _________ keys have already been handed out to the local people.

A. 315

B. 6.000

C. 12.000

D. 12.450

3. In the passage, the underlined word "shortage" means "_________" in Chinese.

A. 挑战

B. 缺点

C. 短缺

D. 困难

4. Which of the following is TRUE according to the passage?

A. The government provides a bike for each family.

B. Local people can get these bikes at special docking stations.

C. If you want a key, you need to pay £5.

D. Few people have agreed to the idea.

5. What's the best title for the passage?

A. The people in London.

B. The transportation in London.

C. The traffic problem in London.

D. The bike revolution in London.

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