Global warming ________ cause huge climatic c...

Global warming ________ cause huge climatic changes and possibly a new ice age.

高一英语单项填空简单题查看答案及解析

Climate change will increase US wildfires,and the smoky air will cause terrible problems in areas far beyond those burned,reports an environmental group Thursday.

Two-thirds of Americans,or nearly 212 million,lived in states suffering from wildfire smoke three years ago,according to the report by the Natural Resources Defense Council(NRDC).These areas,which had smoke for at least a week,were nearly 50 times greater than those burned directly by fire.

“It affects a much wide area of the United States than people have realized.” says author Kim Knowlton,a Columbia University health professor,adding the smoke can move up to hundreds of miles.She says the smoke contains air pollution and can cause several kinds of diseases.

Texas was hit hardest in 2011,when smoke stayed for at least a week in areas that are home to 25 million people,according to NRDC’s report.Illinois,which recorded no wildfires within its borders,came second with

nearly 12 million people affected by smoke that moved in from elsewhere.The other eight states with the most people in touch with smoky air were,in descending order: Florida,Missouri,Georgia,Louisiana,Michigan,Alabama,Oklahoma and Iowa.

Nearly two dozen states had no wildfires within their borders in 2011,but eight of them still had at least one week of smoky air: Illinois,Missouri，Iowa,Kansas,Nebraska,Indiana,Wisconsin and Ohio.

Only 18 states and the District of Columbia had no people in touch with at least a week of smoke that year,although five of them—Alaska,California,Hawaii,Nevada and Utah—had a large area burned by wildfires.

The problem will only get worse.Knowlton says.Scientific research shows climate is causing higher temperatures and health problems.

1.We can learn from the first two paragraphs that_______.

A. climate change killed many Americans

B. there are fewer states burned by wildfires

C. every state had wildfire smoke for at least a week

D. most Americans suffered from wildfire smoke 3 year ago

2.Which of the following states had wildfires within its borders in 2011?

A. Iowa.　　 B. Kansas.　　 C. Ohio.　　 D. California.

3.The underlined word “descending” in the fourth paragraph probably means _______.

A. going down　　 B. coming true　　 C. looking practical　　 D. turning back

4.What is the text mainly about?

A. Climate change causes more wildfires.

B. Wildfire smoke becomes a serious health problem.

C. More wildfires cause climate changes.

D. Air pollution becomes a terrible problem.

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Global warming causes the ocean ________, which in turn speeds ice melting.

A. to warm           B. warming           warmed                 D. warm

高一英语单项填空简单题查看答案及解析

Global warming causes the ocean ________, which in turn speeds ice melting．

A．to warm            B．warming           C．warmed              D．warm

高一英语单项填空中等难度题查看答案及解析

It is widely known that burning coal for electricity is one of the main causes for global warming , but we can’t ignore the cars’ _____ to the greenhouse effect.

A. devotion　　 B. contribution

C. attraction　　 D. reflection

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It is said that the temperature is unusual mainly _______ global warming caused by human activities.

A．in spite of         B．by means of        C．in case of          D．on account of

高一英语单项填空中等难度题查看答案及解析

It was global warming , rather than other causes , ______ led to the extreme weather .

A. which       B. who       C. that      D. what

高一英语单项填空中等难度题查看答案及解析

Experts are trying to work out a plan to deal with the problems caused by global warming ______ it is too late.

A．when            B．if                C．before            D．until

高一英语单项填空中等难度题查看答案及解析

It is already well understood___________ causes the global warming.

A. what   B. when   C. how   D. that

高一英语单项填空简单题查看答案及解析

阅读理解。

Climate change has caused a rise in sea levels.This has increased an amount of salt in fresh water used on farms near the sea.As a result farmers are unable to use fields close to the sea.Scientists call this process “salinization(盐碱化)”,which is reducing the world’s farm lands by 1 to 2 percent every year.

But a farmer in Holland,Marc Van Rijsselberghe started with an experiment,using a mixture of sea and fresh water to grow healthy and tasty vegetables.He put several kinds of plants in the fields.Mr.Van Rijsselberghe worked on the project with scientists from the Free University of Amsterdam.He divided a farm into eight areas.Every area was watered by different water.“We put in a lot of plants in the fields and then we put them in fresh water and in sea water with all the varieties(变化) between them,and then we saw which variety was surviving and which variety was dying.”A computer program created water with eight levels of salinity(盐度).Computerized measuring devices(测量仪器)controlled the water levels and the levels of salinity.

Mr.Van Rijsselberghe said he was able to harvest vegetables from most of the eight test areas.He said the vegetables were smaller than those grown in fresh water.But he said they had more sugar and salt,so they tasted better.

The farmer grew carrots,potatoes,cabbage and onions.He found that potatoes grew better than the other vegetables in the combination of sea and fresh water.Mr.Van Rijsselberghe said four kinds of these potatoes were recently sent to Pakistan,where thousands of hectares(公顷)of land have been damaged by salinization.Farmers in Pakistan will test the Dutch potatoes to see if they can be grown in those fields.

1.What does the passage mainly talk about?

A.Farms near the sea are becoming less and less in Holland.

B.The damage salinization brings to the farms in Holland.

C.Farmers improve the skills to make full use of fresh water.

D.A Dutch farmer uses a mixture of sea and fresh water to grow vegetables.

2.What does the underlined word “them” in Paragraph 2 refer to?

A.The plant.

B.Fresh water.

C.Sea water.

D.Fresh and sea water.

3.It can be known from the passage that　　 .

A.salinization brings great benefits to farmers in Holland

B.the farmer did the experiment using high technology

C.vegetables grew better in sea water than in fresh water in the experiment

D.the farmer achieved success without anyone else helping him in the experiment

4.The vegetables watered by a mixture of sea and fresh water　　 .

A.had less sugar than those grown in fresh water

B.were much bigger than those grown in fresh water

C.had a better taste than those grown in fresh water

D.had more beautiful colors than those grown in fresh water

高一英语阅读理解中等难度题查看答案及解析