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【判断题】
党的十八大报告提出，加强社会建设，必须以保障和改善民生为重点，必须加快推进政治制度改革。A.
正确
B.
错误
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【单选题】When people speak of solar energy, they think only of the sun's rays heating a home or ______ electricity from the sun.
A.
derive
B.
by deriving
C.
of deriving
D.
to derive
【简答题】A．Land, oceans and plants can absorb the sun's rays. B．Not all the sun's energy that reaches Earth can stay there. C．It is warmer in outer space than it is on Earth. D．More energy comes in through the...
【单选题】The sun's rays are absorbed by______.
A.
clouds
B.
the heat waves in the atmosphere
C.
the surface of the earth
D.
water vapor
【单选题】Air and the sun's rays create much distortion, and whatever tends to _____ their influence is useful to the astronomer.
A.
exclude
B.
eliminate
C.
extinguish
D.
impose
【单选题】If the sun’s rays were entirely _______, there would be dramatic changes in the climate on the earth, and the result could be disastrous to the human race. [ ]
A.
covered out
B.
broken out
C.
blocked out
D.
left out
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