【題目】Our country has launched a campaign to ban smoking in public places, which with some heavy smokers.

A. concerns B. was concerned

C. concerned D. is concerned

【答案】D

【解析】D考查時(shí)態(tài)。句意:我們的國家已經(jīng)發(fā)起了一項(xiàng)禁止在公共場(chǎng)所吸煙的運(yùn)動(dòng),這與一些煙癮很大的人有關(guān)。短語be concerned with“有關(guān),主句用了現(xiàn)在完成時(shí)態(tài),which定語從句用一般現(xiàn)在時(shí)態(tài),故選D。

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