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【判断题】
锅炉中燃烧产物我们称之为烟气，是典型的混合物，常包括二氧化碳，水蒸气，氮氧化物和硫氧化物以及飞灰等。A.
正确
B.
错误
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【单选题】—Is Mike a diligent student? —No，but he is a lazy one，if ___ ．
A.
anything
B.
something
C.
everything
D.
nothing
【简答题】阅读理解。 For a long time being happy was considered something that just happened, and there was nothing special about it. Now we know that getting along with other people is something that we can work at...
【单选题】A really fearless soldier ______.
A.
is of little use to the army
B.
is without equal
C.
is nothing but a dead soldier
D.
easily gets killed in a battle
【单选题】We should not overstate the influence of super stars, they are ______ common people.
A.
nothing but
B.
anything but
C.
above all
D.
rather than
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