单项选择题

A．The epidemic of AIDS.
B．The transmission of AIDS.
C．The treatment of AIDS.
D．The impact of AIDS.
<上一题 目录 下一题>
热门 试题

填空题
It is essential that electricity be produced at just the right______to be compatible with a utility grid.
填空题
The most common style of wind turbines, large or small, is the______, with the axis of the blades horizontal to the ground.
相关试题