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【单选题】
肾最重要的功能是 :A.
排出代谢终产物
B.
排出多余或无用物质
C.
分泌肾素
D.
维持内环境相对稳定
E.
维护血压稳定
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反馈参考答案：
举一反三
【单选题】A car accident happened on the highway because of the heavy fog, but no one got seriously injured.
A.
sadly
B.
luckily
C.
hopefully
D.
unfortunately
【单选题】So far hundreds of flights ____ because of the heavy fog .
A.
are canceled
B.
will be canceled
C.
were canceled
D.
have been canceled
【单选题】We were stuck at the airport because of the heavy fog, otherwise we ________ here in time for the conference.
A.
arrived
B.
had arrived
C.
would arrive
D.
would have arrived
【单选题】All flights ______because of the heavy fog, we had to decide to take the train.
A.
were canceled
B.
having canceled
C.
having been canceled
D.
have been canceled
【单选题】Because of the heavy fog, the TV tower was . [ ]
A.
in sight
B.
lost sight
C.
disappeared
D.
out of sight
【单选题】正如佛里克森所言,民众是政府的“所有者”,而非顾客,“所有者”概念具有主动性,它可以决定政府的议程,更符合人民的地位。对这段文字中“所有者”的正确理解是:
A.
主人
B.
合伙人
C.
监督者
D.
参与者
【简答题】阅读 We regret to inform you that the flight has been delayed because of heavy fog.
【单选题】The flight to New York was ________ because of the heavy fog.
A.
put off
B.
put away
C.
put out
D.
put up
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