问题 选择题

2005年12月底,中国南极科考队第22次到达南极洲.为保护南极洲的环境,南极洲的考察只限于(  )

A.环境目的

B.科研目的

C.和平目的

D.生态目的

答案

迄今为止,已有俄罗斯、美国、英国、阿根廷、澳大利亚、日本和中国等30多个国家在南极地区建立了一大批科学考察站.为保护南极洲的环境,南极洲的考察只限于科研目的.故选项B符合题意.

故选:B.

单项选择题
阅读理解

At least 10 million hectares of cultivated(耕作)land in China are polluted, which makes a grave threat to the country’s food safety, the Xinhua News Agency reported on Friday.

The polluted land,which is mostly in economically developed areas,accounts for one-tenth of the country’s total arable(可耕种的)land,according to an incomplete survey by the State Environmental Protection Administration,China’s top environment watchdog.

Pollution on cultivated land threatens the environment,food safety and the sustainable development of agriculture,the administration said.

Because of continual,too much use of chemical fertilizer, pesticide and agricultural plastic sheeting, as well as irrigation using polluted water, a large amount of contaminants(污染物)remain in the cultivated land.

The contaminants affect the soil’s ecological structure and function,leading to decreased soil productivity, lower crop yield(产量),and lower quality of agricultural products-

It also leads to worse water quality in rural areas.

Less than 9 per cent of drinkable water passed checks for bacteria in243 rural water supply stations across the county.

Another survey, which took samples of drinking water and groundwater an 69 small towns。 in Beijing, Tianjin and Hebei Province of North,China, showed that more than half of the water contains too much nitrate(硝酸盐),which may cause diabetes(糖尿病)and damage the kidney.

The administration estimated at least 1 90 million farmers are drinking water that contains harmful substances.

Many villagers drink unfiltered water taken from shallow water wells or water cellars, which are reported to have poor sanitary conditions·

小题1:The author writes the passage to            .

A.1et the readers examine their mistakes

B.present the readers a new idea

C.come up with a solution to ending farmland pollution

D.inform the readers of the importance of fighting farmland pollution小题2:The underlined word “grave” in Paragraph 1 probably means

A.serious

B.certain

C.big

D.terrible小题3:Pollution on cultivated land leads to the following outcomes EXCEPT       .

A.a threat to China’s food safety

B.worse water quality in rural areas

C.a variety of diseases

D.the sustainable development of agriculture