1 . Water shortage is one of the greatest crises facing us today, with two ________________ (three) of the global population living in areas where water is scarce for a month or more every year. (所给词的适当形式填空)

2 . ________ is less than ________.

A．One-third; two-thirds	B．One-third; two-third
C．First-three; first-threes	D．One-third; one-three

3 . 全国几乎三分之一的地方均有震感。(one third) (汉译英)

4 . 网民中接近三分之一是学生，他们因为各种原因上网。(汉译英)

5 . If a sixth mass extinction occurs, scientists who have studied the issue believe _____________.(根据句意填空)

6 . It now has 20, 000 hectares of land, more than ________ are under cultivation.
现在它拥有两万公顷土地, 其中超过三分之二的土地已经耕种。

7 . To my three sons I leave my seventeen horses. My eldest son shall take a half, my second son shall take a     ________(three). （所给词的适当形式填空）

8 . 在过去的三十年里，青少年的平均卡路里消耗量上升了259%，达到了每天2,700卡路里。（average）(汉译英)

9 . 三分之一的人口生活在贫困线或以下。
________ is living at or below the poverty line.

10 . It’s reported that________ of the road________ collapsed. It needs________.

A．three-fourths; was; repaired	B．three quarters; has; to repair
C．three quarters; has; repairing	D．three-fourth; was; to be repaired