英语八上阅读理解5道题

英语八上阅读理解5道题
Why does the Earth become warmer?The amount of energy emitted
by the Sun has risen since 1900.But research showed what the Sun
emitted was less than a third of the warmth during the last century.The
main reason for the warming Earth is the greenhouse gases.Some
greenhouse gases occur（存在于）naturally
in the air,while others result from human activities such as burning
of coal.Greenhouse gases include water vapor,carbon
dioxide(CO2),methane and so on.Greenhouse gases can warm the Earth’s
atmosphere very quickly.CO2 in the atmosphere has risen more than 30%
since the late 1700s and CO2 concentration(浓度)in
the air is now at its highest point in more than 600,000 years.Many
NCAR scientists are part of a global team——IPCC studying this problem.
The team includes more than 1,000 experts from different climate
specialties(专业领域)
( )1.During the last 100 years,the Sun ____.
A.didn’t raise the temperature of the Earth
B.did little to make the Earth warm
C.did more to raise the temperature than greenhouse gases
D.did less to raise the temperature than greenhouse gases
( )2.Which of the following about greenhouse gases is NOT true?
A.Water vapor and carbon dioxide are greenhouse gases.
B.Greenhouse gases are more and more on the Earth.
C.Greenhouse gases are green.
D.Human activities can make greenhouse gases.
( )3.The underlined word “emitted” means ____ in the passage.
A.贮存 B.释放 C.包含 D.爆炸
( )4.IPCC ______
A.includes more than 1,000 NCAR experts
B.studies why the Earth becomes warmer
C.is an American team D.is part of NCAR
( )5.The passage is mainly about _____
A.what IPCC is B.greenhouse gases and the warming Earth
C.how to solve the problem of our Earth
D.calling on people to pay more attention to the warming Earth

1 D
2 C
3 B
4 B
5 B