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【判断题】
鲜黄花菜含有一种叫碱的物质，本身无毒，当它进入人体被氧化后，会迅速生成二碱，这是一种剧毒物质，对人体胃肠道、泌尿系统具有毒性并产生强烈的刺激作用。A.
正确
B.
错误
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举一反三
【单选题】We wouldn’t have had to be in such a hurry if we had known the meeting .
A.
was to put off
B.
was to be put off
C.
put off
D.
had put off
【单选题】We are all for your proposal that the discussion
A.
be put off.
B.
was put off
C.
should put off
D.
is to put off
【简答题】As Mr. Henry did not come. we had to put off (sign) ______ the contract.
【单选题】.Because of the heavy sandstorm, we had to put off the visit until tomorrow to the exhibition of painting _____in the nearby city.
A.
to hold
B.
held
C.
holding
D.
being held
【单选题】There a lack of money, we had to put off building this special school.
A.
was
B.
is
C.
be
D.
being
【简答题】宗气的生理功能主要有为_____、_____和_____三个方面。
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