单项选择题

A．She is busy at work.
B．She is resting in bed.
C．She has to go out of town on business.
D．She lets her husband experience the cook.
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填空题
El Nino occurs irregularly and we sometimes can ______.
填空题
A strong El Nino is often associated with wet winters over the southern U.S., as well as drought in Indonesia, Philippines and Australia.
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