单项选择题

A．The lifecycle of trees.
B．The number of trees.
C．The intensity of solar burning.
D．The quality of air.
<上一题 目录 下一题>
热门 试题

单项选择题
A．The underground oil resources have not been affected.B．Most of the desert animals and plants have managed to survive.C．The oil lakes soon dried up and stopped evaporating.D．The underground water resources have not been polluted.
A．The underground oil resources have not been affected.
B．Most of the desert animals and plants have managed to survive.
C．The oil lakes soon dried up and stopped evaporating.
D．The underground water resources have not been polluted.
单项选择题
Knowledge Creating-type Lessons could only be applied to the advanced children.
A．Y
B．N
C．NG
相关试题