测试题
1. It can be concluded that a concentration of carbon dioxide in the atmosphere would______.
A) prevent the suns rays from reaching the earths surface
B) mean a warming up in the Arctic
C) cause great climate changes in the northern hemisphere
D) raise the temperature of the earths surface
2.The article was written io explain____________.
A) the greenhouse effect.
B) che sola:r effects on the earth.
C) the models of solar-weather interactions.
D) the causes affecting weather.
3.Why is the fuel consumption greater in the northern hemisphere. but temperatures there seem to be falling?
A) Mainly because the levels of carbon dioxide are rising.
B) Possibly because the ice caps in the poles are melting.
C) Because the inertia of the earths climate take effect.
D) Partly because the output of solar energy varies.
4.On the basis of their models. scientists are of the opinion that_______.
A) the climate of the world should be becoming cooler
B) it will take thousands of years for the inertia of the earths climate to take effect
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