单选题：What is the root causeof desertification?

题目内容：

What is the root causeof desertification? A．poor farming
B．overpopulation
C．radical climate change
D．disappearance of rare plant species

参考答案：

答案解析：

Yao Ming had to undergo a series of TCMtreatments because

Yao Ming had to undergo a series of TCMtreatments because A．he wanted to make a

分类：理工类题型：单选题

A geothermal reservoir is formed when hot water is trapped under______.A．hot spr

分类：理工类题型：单选题

下列属于逆治法的是（　　）A．通因通用 B．寒因寒用 C．热因热用 D．虚则补之 E．实则泻之

分类：理工类题型：单选题

Brunel was involved less in railwayconstruction than in other engineering fields

分类：理工类题型：单选题

5. The new garment fits herperfectly. A．haircut B．purse C．clothes D．necklace

分类：理工类题型：单选题