—Nowadaysagrowingnumberofpeoplegotoworkbybike.—Bicyclin...

問題詳情：

—Nowadays a growing number of people go to work by bike.

—Bicycling is good exercise；________it doesn't pollute the air.

A．therefore        B．moreover     C．however          D．otherwise

【回答】

B

知識點：副詞

題型：選擇題