单项选择题

Another word for "fluids" would be（）.

A．solids
B．gases
C．densities
D．liquids

<上一题目录下一题>

热门试题

单项选择题

People must produce more food because （）.

A．people get hungrier every year
B．the population of the world is growing
C．there are too many unemployed farmers
D．people do not like the food now produced

单项选择题

22（）

A．differed
B．confused
C．changed
D．mixed