单项选择题

Which of the following is true

A．The "Dry Valleys" have nothing left inside.
B．The "Dry Valleys" never hold glaciers.
C．The "Dry Valleys" may carry a message of hope for the verdant.
D．The "Dry Valleys" are useless to scientists.

<上一题目录下一题>

热门试题

单项选择题

What would the result be if the West Antarctic Ice Sheet disappeared

A．The western part of the continent would be disappeared.
B．The western part of the continent would be reduced.
C．The western part of the continent would become hidden Islands.
D．The western part of the continent would become a group of smaller Islands.

单项选择题

We need to know something about the structure and operation of science because ______.

A．it is not easy to understand the things that excite and frustrate scientists
B．science affects almost every aspect of our life
C．scientists live in a specific subculture
D．it is easier to understand general characteristics of science