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【单选题】
下列与化学反应能量变化相关的叙述正确的是 [ ]A.
生成物总能量一定低于反应物总能量
B.
放热反应的反应速率总是大于吸热反应的反应速率
C.
应用盖斯定律，可计算某些难以直接测量的反应焓变
D.
同温同压下，H 2 (g)+Cl 2 ( g)=2HCl(g)在光照和点燃条件下的△H不同
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【单选题】He made clear that he would take part in the sports meeting.
A.
these
B.
that
C.
this
D.
it
【单选题】We were all surprised when he made it clear thathe ___office soon.
A.
leaves
B.
wouldleave
C.
left
D.
had left
【单选题】One common effect of rent ceilings in big cities is
A.
that landlords build more apartments.
B.
that landlords charge key money, high payments charged to new tenants for new locks and keys.
C.
to equalize the quantity of apartments demanded and the quantity supplied in neighborhoods.
D.
to reduce the search activity by those seeking shelter.
【单选题】He made it clear that he didnt want to talk to me. The italicized part is______.
A.
the subject
B.
the object
C.
the adverbial
D.
the complement
【单选题】I soon made ______ clear why he had to ask for aweek`s leave.
A.
． it
B.
． she
C.
． which
D.
． he
【单选题】Rent seeking is one reason why countries choose to
A.
restrict trade.
B.
export and import the same goods.
C.
work for freer trade.
D.
follow the theory of comparative advantage.
【单选题】. He made clear to his workmates that he would leave the company.
A.
it
B.
that
C.
them
D.
this
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