单项选择题
Which of the following is NOT the reason why small green plants are very important to dry places
A．They keep the earth from becoming even drier.
B．They do not let wind blow the earth away.
C．They add color to the dry places.
D．They hold water.
点击查看答案&解析
<上一题
目录
下一题>
热门
试题
单项选择题
American university students are usually under pressure of work because ______.
A．their academic performance will affect their future careers
B．they are heavily involved in student affairs
C．they have to observe university discipline
D．they want to run for positions of authority
点击查看答案&解析
单项选择题
Land is becoming desert because of lack of ______.
A．rain
B．people
C．wind
D．plants
点击查看答案&解析
相关试题
79（）
80（）
72（）
78（）
76（）