单项选择题

Without air protection, the sun's rays______.

A．will become very cold
B．will do good to human beings
C．will become hot
D．will do harm to human beings
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单项选择题
Without air, there would be no______.
A．shelters
B．volcanoes
C．weather
D．springs
单项选择题
According to this passage, which one of the following spelling would Webster have approved in the dictionary
A．Develop.
B．Color.
C．Theatre.
D．Honour.
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