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单项选择题

How many children die every day from malnutrition and preventable diseases according to the UN estimation

A．Twenty-five thousand.
B．Fifty-five thousand.
C．Forty-five thousand.
D．Thirty-five thousan

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热门试题

单项选择题For how long have the heavy rains been falling

A．Four days.
B．For days.
C．Four weeks.
D．For weeks.

单项选择题Why did the resistance of insects to man-made insecticides develop so rapidly

A．Because farmers use less insecticides now.
B．Because farmers have been using insecticides for many years.
C．Because insects arc using the mechanisms against poisons produced by plants to deal with insecticides.
D．Because insects have been eating plants for many million years.