问题 单项选择题

人有一种记忆叫免疫记忆。人的血液中有着极少的富有自我牺牲精神的细胞,它们生存的时间极短,主要职能是尽量多地消灭人体的敌人。淋巴细胞对侵入血液的细菌或简单有毒物质做出快速反应,生成抗体,把有害物质粘住,不让它们进入其他器官。而消灭来敌的重任则落在血液中的吞噬细胞头上。这些细胞能够毫不费力地区别外来细胞,能够把它们记住并把记忆保留下来。人一旦得过麻疹或猩红热,就会获得终身免疫力。 对这段话理解正确的一项是( )。

A.人的血液中的吞噬细胞的主要职能是记住侵入人体的外来细胞

B.淋巴细胞能够把侵入血液的有毒物质粘住,并阻止它们进入其他器官

C.人的血液中吞噬细胞和淋巴细胞都是富有牺牲精神的细胞

D.人具有免疫记忆,只要得过麻疹和猩红热,就会获得终身免疫

答案

参考答案:C

阅读理解

The quality of water supply in southern Beijing has been improving in recent years, an official said.

In addition to improvements in the network of pipes, the government has been upgrading three recycled water plants in the south of the capital, said Zhao Lei, spokesman for the Beijing Municipal Commission of Development and Reform.

"The transformation of the three plants has increased the recycled water processing capacity by 160,000 cubic meters per day," he said.

In addition, the city is also speeding up the construction of sewage treatment plants to further recycle the sewage, Zhao said.

Zhang Xiang, a researcher from Nature University, an environmental protection NGO in Beijing, said recycled water use should be promoted, especially in water-scarce cities such as Beijing.

Setting up more recycled water plants in the capital will not only promote efficient water use, but also reduce costs because recycling water is much cheaper than transferring it over long distances, he said.

According to the Beijing Water Authority, the capital will set up 46 more recycled water plants citywide in the next three years while upgrading 20 sewage treatment plants.

The treatment rate of domestic sewage in downtown Beijing will reach 98 percent by the end of 2015, it said.

The capital's recycled water is mainly used for industry, landscaping and cleaning, Zhang said.

Many new communities in southern Beijing are equipped with a network to recycle water.

In the past, people were not enthusiastic about using recycled water. However, as the government has boosted the quality of recycled water and set up more recycled water plants, more residents are gradually accepting it.

Residents in southern Beijing will also enjoy more clean energy, as the government will replace traditional coal-burning stoves with electric radiators as part of a three-year plan to develop southern Beijing from 2013 to 2015.

Since 2010, Beijing has taken measures to develop its southern areas. Earlier efforts have seen the region, which used to rely heavily on low-end industries such as cement factories and small coal mines, being turned into a bustling commercial center and home to many educational institutions.

小题1:This passage may appear in ________ section.

A.business

B.life

C.politics

D.forum小题2:which statement is true according to the passage

A.Recycled water will be mainly used for drink.

B.As usual, recycled water is accepted by people.

C.Traditionally people in southern Beijing use coal-burning stove for cooking.

D.The water Transferred over long distance is cheaper than recycled water.小题3: How many recycled water plants will the capital city have in about 3 years?

A.46.

B.20

C.3

D. 49小题4: What does the last paragraph mainly tell us?

A.Southern area in Beijing has taken on a new look.

B.The southern area is hone to many educational institutions

C.Southern area in Beijing is more beautiful now.

D.Southern area in Beijing is a busy place now .小题5: Which is the best title for the passage?

A.Beijing government has taken measures to improve its people`s life.

B.Recycled water flows to southern Beijing.

C.More recycled water plants will be built.

D.The southern Beijing residents will enjoy clean water

填空题