单项选择题Every chemical change either results from energy being used to produce the change, or causes energy to be ______ in some form.
A.given off
B.put out
C.set off .
D.used up
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A.essentially
B.completely
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2.单项选择题In 1914, an apparently insignificant event in a remote part of Eastern Europe ______ Europe into a great war.
A.inserted
B.imposed
C.pitched
D.plunged
3.单项选择题It is ______ of you to turn down the radio while your sister is still iii in bed.
A.considerable
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4.单项选择题Nobody yet knows how long and how seriously the shakiness in the financial system will ______ down the economy.
A.put
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5.单项选择题By 1929, Mickey Mouse was as popular ______ children as Coca-Cola.
A.for
B.in
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6.单项选择题Because Edgar was convinced of the accuracy of this fact, he ______ his opinion.
A.struck at
B.strove for
C.stuck to
D.stood for
7.单项选择题My students found the book ______; it provided them with an abundance of in- formation on the subject.
A.enlightening
B.confusing
C.distracting
D.amusing
8.单项选择题Professor Taylor's talk has indicated that science has a very strong ______ on the everyday life of non-scientists as well as scientists.
A.motivation
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C.impression
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9.单项选择题The wealth of a country should be measured ______ the health and happiness of its people as well as the material goods it can produce.
A.in line with
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A.as
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