单项选择题

A．70% of the land surface.
B．Food.
C．Drinking water directly.
D．Mineral water.
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单项选择题
A．Spring lasts longer than any other season of the year.B．Spring is the shortest season of the year.C．The weather in spring, like in fall, is neither too hot nor too cold.D．Spring increases the vitality of every living thing on Earth.
A．Spring lasts longer than any other season of the year.
B．Spring is the shortest season of the year.
C．The weather in spring, like in fall, is neither too hot nor too cold.
D．Spring increases the vitality of every living thing on Earth.
单项选择题
A．People show greater mental abilities in mild weather than in extremely hot or cold weather.B．Heat has less effect on people’s intelligence than the told’does.C．People are more intelligent on cloudy days.D．Temperature has nothing to do with people’s intelligence.
A．People show greater mental abilities in mild weather than in extremely hot or cold weather.
B．Heat has less effect on people’s intelligence than the told’does.
C．People are more intelligent on cloudy days.
D．Temperature has nothing to do with people’s intelligence.
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