题目内容
（请给出正确答案）
The atmosphere certain gases mixed together in definite proportions.
A: consists of
B; is made up
C; composes of
答案
A
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更多“The atmosphere certain gases m…”相关的问题
A.environment
B.context
C.atmosphere
D.relation
The best title for this passage would be ______.
A．The Atmosphere and Our Environment
B．Research on Radiation
C．Effects of Space Radiation
D．Importance of Protection Against Radiation
The atmosphere created by the writer when she describes the swans is ______.
A．magical
B．frightening
C．deafening
D．disturbing
It can be concluded from the passage that ______.
A．the circulation of atmosphere protects the biosphere and makes life on earth possible
B．if the protective atmosphere is damaged by human activity, all life will cease
C．life is the result of complex interdependent events of nature
D．despite the complexity and power of the atmosphere humans can affect it greatly
A.whichindicatedtheircharacterproperties
B.whosecharacteristicpropertiesareindicating
C.whatcharacterizetheirindicatedproperties
D.thatindicatetheircharacteristicproperties
A．The atmosphere and our environment.
B．Research radiations.
C．Effects of space radiation.
D．Importance of protection against radiation.
A．They found the cloud's reaction to the carbon level of the atmophere was too complex to predict.
B．They were puzzled by the carbon levels in the atmosphere's cloud.
C．The atmosphere's reaction to the carbon level's raise is more diffcult to predit than they ever thought.
D．Too many uncertainties in the atmosphere's carbon level are to be reduced.
A．we fire the rockets containing algae into the atmosphere of Venus
B．we change Venus temperature
C．we make it possible to rain on Venus
D．we change the atmosphere on Venus
A．Y
B．N
C．NG
