问题 选择题

当前国际竞争的实质是以经济和科技实力为基础的综合国力的较量。资料显示,在“十五”期间的前4年,国家财政对科技的投入年均增长17.45%。但目前我国每年科技成果转化与产业化率偏低。这说明,在综合国力较量中,我国增强科技力尤其需要:[ ]

A、加强科学技术交流

B、提高科技成果的经济效益

C、加大科技经费投入

D、提高科技应用和发展水平

答案

答案:D

单项选择题
阅读理解

Scientists are trying to make the deserts into good land again.They want to bring water to the deserts,so people can live and grow food.They are learning a lot about the deserts.But more and more of the earth is becoming desert all the time.Scientists may not be able to change the desert in time.

Why is more and more land becoming desert?Scientists think that people make deserts.People are doing bad things to the earth.

Some places on the earth don’t get much rain. But they still don’t become deserts. This is because some green plants are growing there. Small green plants and grass are very important to dry places. Plants don’t let the sun make the earth even drier. Plants do not let the wind blow the dirt away. When a bit of rain falls, the plants hold the water. Without plants, the land can become desert more easily.

小题1:Deserts ________ .

A.never have any plants or animals in them

B.can all be turned into good land before long

C.are becoming smaller and smaller

D.get very little rain小题2:Small green plants are very important to dry places because ________ .

A.they don’t let the sun make the earth even drier

B.they don’t let the wind blow the soil away

C.they hold water

D.All of the above.小题3:Land is becoming desert little by little because ______.

A.plants can’t grow there

B.there is not enough rain

C.people haven’t done what scientists wish them to do

D.scientists know little about the deserts小题4:Why is more and more land becoming desert according to this passage?

A.Earthquakes make deserts.

B.Wind makes deserts.

C. Lack of water makes deserts.

D.People make deserts.