单项选择题

Which of the following is NOT mentioned as an effect of bad weather

A．Power failure.
B．Illness among workers.
C．Transportation problems.
D．Production delays.
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单项选择题
It in the first sentence of this passage refers to ______.
A．drought
B．moisture
C．evaporation
D．rain
单项选择题
Which of the following is NOT a cause of drought
A．Unwise fanning practices.
B．Fast evaporation of moistures.
C．Water shortages.
D．Rising up of temperature.
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