单项选择题

A. Its chemical elements must be studied.
B. Its temperature must be lowered.
C. Big spaceships must be built.
D. Its atmosphere must be changed.
<上一题 目录 下一题>
热门 试题

单项选择题
A. They walked on the roof of the building. B. They produced loud music. C. They had a violent argument. D. They got drunk and started singing.
A. They walked on the roof of the building.
B. They produced loud music.
C. They had a violent argument.
D. They got drunk and started singing.
单项选择题
A. Because the water pressure is greater than air pressure. B. Because the first Comets crashed in the water. C. Because there is less damage when the explosion takes place under water. D. Because it is the only way available for engineers to find out which part has cracked.
A. Because the water pressure is greater than air pressure.
B. Because the first Comets crashed in the water.
C. Because there is less damage when the explosion takes place under water.
D. Because it is the only way available for engineers to find out which part has cracked.
相关试题