第15题 Acid rain and snow result from the chemical reactions between industrial emissions of sulfur dioxide and nitrogen oxides [U]with atmospheric water vapor to produce highly corrosive sulfuric and nitric acids[/U].
(D)and atmospheric water vapor which have produced sulfuric and nitric acids which are highly corrosive.
(E)and atmospheric water vapor to produce highly corrosive sulfuric and nitric acids.
正确答案是E,可是我不明白这是什么结构result from A and B to do something
第47题 [U]Unlike that of [/U]the Native Americans of British Columbia, the Plains, and the Southwest, those of Puget Sound lived in relatively small, autonomous villages.
(B)Unlike those of
(C)Unlike
答案是c,可是我不明白这句话的意思[em16]
第89题 Corporation will soon be required to report to the government whether they have the necessary reserves to pay the pension benefits [U]earned by their employees and that the information be published [/U]in annual reports to shareholders.
(A)earned by their employees and that the information be published
(D)earned by their employees, information that must also be published
我选了A,that后面的内容和to report ....并列,这样为什么不对呢？
第91题 The distribution og mss within the core of the Earth, like the mantle that surrounds the core, has been deduced from the orbital behavior of the Earth and the motions of satellites controlled by the gravity oif the Earth.
(B)that within the mantle surrounding the core
(C)that of the mantle surrounding the core
答案是B,为什么呢？
[em04][em27]作者: suse 时间: 2002-11-26 19:08
15是result from the chemical reactions to produce....
而between industrial emissions of sulfur dioxide and nitrogen oxides and atmospheric water vapor 第二个and 才是和between连的，作者: suse 时间: 2002-11-26 19:10
47题 Unlike that of the Native Americans of British Columbia, the Plains, and the Southwest, those of Puget Sound lived in relatively small, autonomous villages.
是the Native Americans 和 the Plains, and the Southwest比，而those是指the Plains, and the Southwest
明白了吗？作者: suse 时间: 2002-11-26 19:13
89题 and 前后要对称呀，to do 不能和that句子并列。作者: suse 时间: 2002-11-26 19:18
91题，B对
因为that 指the distribution of mass,而且两个within很好的和对称了,
另外surrounds 是一次性的动作， surrounding强调是一直都这样，更符合逻辑。作者: lucylu 时间: 2002-11-26 21:10
15.the chemical reactions between industrial emissions of sulfur dioxide and nitrogen oxides作result from 的宾语。atmospheric water vapor to produce highly corrosive sulfuric and nitric acids与前半句Acid rain and snow result from the chemical reactions between industrial emissions of sulfur dioxide and nitrogen oxides 并列。VAPOR在句中作不及物动词，to引导的不定式是vapor的结果。
47.意思为：与住在British Columbia, the Plains, and the Southwest的Native Americans 不同，PS的Native Americans住在relatively small, autonomous villages。
该句暗含的意思是前者的美国本土人可能住在相对较大,但非自治的地区。
89.标准的倒装句,考点也在此。report+宾语+to the government,但whether引导的宾语从句太长，所以后置。句中，information与the necessary reserves 并列，省略了the，两者都作动词have的宾语。
As for 15, I agree with suse.
(Acid rain and snow) <主语> result from the chemical reactions between （industrial emissions）(of sulfur dioxide and nitrogen oxides)<修饰emissions> and (atmospheric water vapor) to produce highly corrosive sulfuric and nitric acids.
89. I partly agree with lucylu.
Corporations will soon be required to report (to the government) (whether they have the necessary reserves to pay the pension benefits earned by their employees)<宾语>, (information that must also be published in annual reports to shareholders) .
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