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【单选题】
最近美国卡内基——梅隆大学化学工程专家设计出一种新工艺，可以大幅提高以玉米为原料生产乙醇的效率，这一成果将有助于推广使用新型燃料乙醇汽油。“E85”是含乙醇85%的乙醇汽油。科学家最近的研究表明，大量使用“E85”可能导致大气中O 3 含量上升，将会对人体造成更直接伤害。寻找新的化石燃料替代能源已成为化学工作者研究的新课题。下列各项说法中正确的是A.
推广使用乙醇汽油是为了减少温室气体的排放
B.
等质量的“E85”和汽油充分燃烧后放出的热量相等
C.
“E85”是由汽油和乙醇这两种物质组成的混合物
D.
乙醇汽油比汽油燃烧时耗氧量低，燃烧更充分，产生的污染小
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【单选题】He has ________ himself to be innocent. [ ]
A.
checked
B.
realized
C.
confirmed
D.
showed
【单选题】He works much harder than I, so the money he has made is mine.
A.
twice so much that
B.
twice as much as
C.
as twice much as
D.
as much as twice
【简答题】Why is “such simplistic advice” (Line 1, Para. 3) impossible to follow? A) No one can stay on the same job for long. B) No prescription is effective in relieving stress. C) People have to get married ...
【简答题】Why is the World Bank 'doing more to help poor countries to prepare for the worst' (para. 10)?
【单选题】Why does Bill believe that 'it's not a quantum leap for me to go to Jupiter'(Para. 2)?
A.
He is rich enough to pay experienced astronauts to help him to explore Jupiter.
B.
He can easily get political and financial backup from the government.
C.
He can receive financial and technical support from the company he runs.
D.
His experience gained from exploring caves will facilitate his exploring in Jupiter.
【单选题】He is talking so much about America as if he _____ there.
A.
had been
B.
has been
C.
was
D.
has gone
【简答题】(Para. 2) 2 Why was Directed Studies dubbed Directed Suicide by Yalies?
【单选题】Tom too much meat and he has become much too fat. He should do more sports. [ ]
A.
has had
B.
will have
C.
is having
D.
has
【单选题】He has never been to Japan，but he is always talking much a．bout it as though he it．
A.
has visited
B.
had visited
C.
would have visited
D.
should visit
【单选题】He has spent, 1 think, a lot __________ time in reading than she has.
A.
of
B.
more
C.
much more
D.
of much more
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