题目内容

美国是世界头号人才强国。()

查看答案

搜索结果不匹配？点我反馈

更多问题

Scientist 1’s viewpoint indicates that when the mate-rials that compose most of a comet are sufficientlyheated, they change to:

A. solids.
B. gases.
C. liquids.
D. a vacuum.

总的来看，当前中国经济处于增速换档期和结构调整期，但是所处的具体阶段却有差别。()

伽利略是实验物理学的先驱，伽利略是伟大的物理学家，所以，有的伟大的物理学家是实验物理学先驱。()

The history teacher told us the ring was a piece of______treasure because it had been handed down from an ancient king.

A. invaluable
B. valued
C. previous
D. precise