The author associates the issue of global warming with that of smoking because _____.
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1 .
A x=1，x=0是第一类间断点 B x=1，x=0是第二类间断点 C x=1是第一类间断点，x=0是第二类间断点 D x=1是第二类间断点，x=0是第一类间断点
2 .An argument made by supporters of smoking was that _____.
A there was no scientific evidence of the correlation between smoking and death B the number of early deaths of smokers in the past decades was insignificant C people had the freedom to choose their own way of life D antismoking people were usually talking nonsense
3 .According to Bruce Alberts, science can serve as _____.
A a protector B a judge C a critic D a guide
4 .What does the author mean by “paralysis by analysis” (Last line, Paragraph 4)?
A Endless studies kill action. B Careful investigation reveals truth. C Prudent planning hinders progress. D Extensive research helps decision-making.
5 .According to the author, what should the Administration do about global warming?
A Offer aid to build cleaner power plants. B Raise public awareness of conservation. C Press for further scientific research. D Take some legislative measures.
7 .The phrase “reneging on”(para.1) is closest in meaning to __________.
A condemning B reaffirming C dishonoring D securing
8 .极限为( )
A -1 B 1 C 2 D -2
9 .By entering into the 2002 agreement, Entergy intended to __________.
A obtain protection from Vermont regulators B seek favor from the federal legislature C acquire an extension of its business license D get permission to purchase a power plant.
10 .对于3阶矩阵A，如果r（A）=3，则r（A*）=（）。
A 0 B 1 C 2 D 3
