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单项选择题

It seems that Mars ______.

A．may be inhabited by attractive Martians
B．may have some vegetable life
C．can have no life at all
D．may have both vegetable and animal life

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热门试题

单项选择题Charles Cross felt ______.

A．angry when the government paid little attention to his ideas
B．pleased when the government did take notice of his plan
C．surprised that the officials were interested in his suggestion
D．disappointed at the lack of interest shown in his plan

单项选择题There is unlikely any life on Venus because ______.

A．the surface is too hot
B．the weather is too cold
C．it is severely short of water
D．it has a very thin atmosphere