单项选择题

In dry weather the farmers who live higher up the valley ______.

A．share the water with their neighbours
B．keep all the water for themselves
C．build canals across the fields of other farmers
D．work hard to store water

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热门试题

单项选择题

Crops can be produced in desert only because ______.

A．there is a lot of rain
B．there is one reservoir
C．the people work together for the benefit of all
D．many wells have been found

单项选择题

People shouldn't smoke unless

A．they are having public meetings
B．in buses or ball-rooms
C．invited by the hostess near the end of the meal to do so
D．they walk on the street