单项选择题

A．The effect of the atmosphere on rainfall.
B．How conditions on earth support life.
C．How water originated on earth.
D．A new estimate of the age of earth.
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单项选择题
A．He was trained as an electronics engineer.B．He was trained as a mechanical engineer.C．He was trained as a communication engineer.D．He was trained as a nuclear engineer.
A．He was trained as an electronics engineer.
B．He was trained as a mechanical engineer.
C．He was trained as a communication engineer.
D．He was trained as a nuclear engineer.
单项选择题
A．She goes home for lunch.B．She spends her time shopping.C．She gets interested in what she is reading.D．She doesn’t wake up in time.
A．She goes home for lunch.
B．She spends her time shopping.
C．She gets interested in what she is reading.
D．She doesn’t wake up in time.
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