单项选择题

Farmers use chemicals and fertilizers in order to ______.

A．improve their working conditions
B．increase the yields of their crops
C．provide their crops with more vitamins and minerals
D．improve the quality of goods grown in commercial farming areas

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热门试题

单项选择题

He had had a long walk. He was dying to have a drink.

A．他走了远路。淹淹一息的他还想喝口水。
B．走了远路之后，他已经奄奄一息了，想喝一点水救命。
C．走了远路之后，他要死了，只想喝一点水。
D．走了远路之后，他口渴得要命，想喝口水。

单项选择题

The word this in the second sentence of paragraph three refers to ______.

A．the way of processing foods
B．producing domestic animals in large quantities
C．the process of enriching the soil
D．raising animals in a natural way