单项选择题

Cycling is a good exercise.（）, it doesn't pollute the air.

A.Therefore
B.Moreover
C.But
D.However

<上一题 目录 下一题>
热门 试题

单项选择题
Speed limits should lead（） fewer deaths on the roads.

A.to
B.off
C.on
D.in
单项选择题
The hospital is carrying（）tests to find out what’s wrong with her.

A.over
B.out
C.off
D.away
相关试题