Think about the different ways that peop

题型:阅读理解

问题:

Think about the different ways that people use wind. You can use it to fly a kite or to sail a boat. Wind is one of our cleanest and richest power sources, as well as one of the oldest. Evidence shows that windmills (风车) began to be used in ancient Iran back in the seventh century BC. They were first introduced to Europe during the 1100s, when armies returned from the Middle East with knowledge of using wind power.

For many centuries, people used windmills to grind (磨碎) wheat into flour or pump water from deep underground. When electricity was discovered in the late 1800s, people living in remote (偏僻的) areas began to use them to produce electricity. This allowed them to have electric lights and radio. However, by the 1940s when electricity was available to people in almost all areas of the United States, windmills were rarely used.

During the 1970s, people started becoming concerned about the pollution that is created when coal and gas are burned to produce electricity. People also realized that the supply of coal and gas would not last forever. Then, wind was rediscovered, though it means high costs. Today, there is a global movement to supply more and more of our electricity through the use of wind.

小题1:From the text we know that windmills _______.

A.were invented by Europeans armies

B.have a history of more than 2800 years

C.used to supply power to electric lights in remote areas

D.have rarely been used since electricity was discovered小题2: What was a new use for wind power in the late 19th century ?

A.Sailing a boat.

B.Producing electricity.

C.Grinding wheat into flour.

D.Pumping water from underground.小题3:One of the reasons why wind was rediscovered in the 1970s is that ______ .

A.wind power is cleaner

B.it is one of the oldest power sources

C.it was cheaper to create energy from wind

D.the supply of coal and gas failed to meet ends小题4:What would the writer probably discuss in the paragraph that follows ?

A.The advantages of wind power.

B.The design of wind power plants.

C.The worldwide movement to save energy.

D.The global trend (趋势) towards producing power from wind.

考点:科教类阅读
题型:阅读理解

常见的跨膜物质转运形式有____、____、____、____、____。

题型:阅读理解

平均速度是描述物体一段时间内运动快慢的总体效果,空间上对应一段位移,时间上对应一段时间.下列选项中所说的速度中指的是平均速度的是(  )

A.子弹在枪膛内的速度为850m/s

B.列车以165km/h速度通过某一隧道

C.太空回收舱以9m/s的速度落入大西洋

D.我国著名跨栏选手刘翔在110m比赛中跨过第三个栏时,速度传感器显示他此时的速度为9.2m/s

题型:阅读理解

废水治理中危害性很大的重金属废水的主要处理方法为化学沉淀法。

题型:阅读理解

肺癌。

题型:阅读理解

听到他船鸣放一短声,则表示他船()。

A.正在向左转向

B.正在向右转向

C.将要向左转向

D.将要向右转向

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