Question

【题目】To prevent the deserts coming near, China has planted billions of trees---to replace destroyed forests and as barriers against the sand. This isn’t a cure, though, say experts, as thirsty trees can make the problem worse by taking in groundwater.

“Planting trees is one way, but it isn’t that simple. It doesn’t solve the basic issue of water resources,” says Wu Bo, a professor. “We need to calculate how much water the trees will absorb, or else it could have a negative effect.”

Villagers in Zhengxin have taken on this challenge, with limited success. When the irrigation channels began to run dry, Lu Xianglin switched from wheat to cotton on his land. He also planted trees to protect his fields from sandstorms. He says he still gets good yields（产量） using flood irrigation and earns a good income for his family.

Other farmers haven’t stuck it out（坚持到底）: about one in three have left Zhengxin in the past 10 years after their wheat crops died. Young people who can find jobs in the towns rarely return.

Last week, Mr Lu joined the other men in his village on a government-arranged trip to see the land that has been set aside for their relocation, nearly 40 miles to the south. The next day, he was back, shaking his head at the plan. The idea of uprooting his family troubles him, as does the idea of giving up the land that fed his forefathers. He prefers to stay and keep up the fight.

“With enough water, this problem can be solved,” Lu says. “We can plant trees and grass, and they will grow bigger. That will stop the desert.”

Experts say that farmers could switch to drip irrigation （滴灌）to lessen their water intake for growing crops. Elsewhere in the region, farmers have built brick greenhouses as part of a plan to grow vegetables using less water. Roadside signs urge farmers to “Save Water, Protect the Environment”.

【1】The negative effect of planting trees in deserts is that __________.

A. it can make groundwater become less

B. it can prevent the sand moving freely

C. it can stop crops growing well

D. it can get the soil to become poor

【2】Why did Mr. Lu NOT accept the idea of relocation?

A. Because the plan of relocation will cost him much money.

B. Because his family had trouble moving away.

C. Because he was reluctant to give up his land.

D. Because he would rather stay than fight against the deserts.

【3】What can we infer from the passage?

A. The deserts drive more and more people to leave their homes for their lives.

B. People have no means to fight against the land becoming desert.

C. Water is the biggest barrier for people to stop the desert.

D. Planting trees cannot solve the problem of desertification of farmland.

【4】What advice is given by experts to save water?

A. To plant more trees.

B. To build greenhouses.

C. To change crops.

D. To use drip irrigation.

Answer 1

【答案】

【1】A

【2】C

【3】C

【4】D

【解析】

试题分析：本文属于科普类阅读，介绍了人们与沙漠化斗争的最大问题在于缺少水。专家建议当地人使用滴灌等技术减少用水量并尽可能地节约用水。

【1】A 细节理解题。根据第一段最后一句This isn’t a cure, though, say experts, as thirsty trees can make the problem worse by taking in groundwater.可知种树并不是一个治本的方法，因为这些树会吸收很多的地下水。这会带来负面影响。故A正确。

【2】C 推理判断题。根据第五段最后两句The idea of uprooting his family troubles him, as does the idea of giving up the land that fed his forefathers. He prefers to stay and keep up the fight.由于沙漠化，政府计划让他们搬迁。但是这个想法让他很难过，因为他还想待在这里和沙漠化做斗争。他不情愿离开祖辈生活的地方。故C正确。

【3】C 推理判断题。根据最后一段首尾句Experts say that farmers could switch to drip irrigation （滴灌）to lessen their water intake for growing crops. 和Roadside signs urge farmers to “Save Water, Protect the Environment”.可知专家建议农民转换成滴灌来减少用水量。路边的标牌上也要求农民节约用水，这都说明缺水才是人们与沙漠做斗争的最大的障碍。故C正确。

【4】D 细节理解题。根据最后一段第一句Experts say that farmers could switch to drip irrigation （滴灌）to lessen their water intake for growing crops. 可知专家建议农民转换成滴灌来减少用水量。故D正确。