再请教牛牛几道补充材料的题

littlebluesk

187：In its most recent approach, the comet Crommelin passed the Earth at about the same distance and in about the same positioin, some 25 degrees above the horizon, (that Halley's comet will pass the next time it appears.)
d:as will Halley's comet
e: as halley's comet will do
答案选d,可是E 为什么不对？
194
The commision has directed advitisers to restrict the use of the word" natural "to foods that do not contain color or flavor additives, chemecal proservatives (or nothing that has been )synthesized.
D: or anything that has been
e: and anything

想问一下，在这个句子里，"or "and "and"的使用的问题，是否一定得用or 呢？
210 Computers are becoming faster, more powerful, and more reliable,and (so too are moderms, they are the devices to allow )two or more computers to share information over regular telephone lines.
b:So too are modems, the devices that allow
c:so too modems,the devices allowing,
答案选b,我选的c,难道不可以省略的么？为什么用定语从句修饰，不用分词修饰呢？

braveMBA

187、比较从句中的实意动词省略，D比E简洁
194、这里的 anything ... synthesized同前面的color or flavor additives...不是同一类并列对象，所以or比较好地解决了这个问题，而and 在并列关系上有歧义
210、我觉得这里不可以省略，AND引导的并列的句子，而且主语发生了变化，其实B已经是省略句了。从句和分词在这里我觉得不是判断的依据。

joywzy

T 194, 是否定的,只能用or

T210,这是两个并列句,不能省.

从句和分词的修饰:从句表示一次性,分词表示长期的,比如法规用分词修饰好.另外,分词尽量不要放在句子,避免歧义.所以这里用从句好.

carefield

以下是引用braveMBA在2003-8-4 23:46:00的发言：
187、比较从句中的实意动词省略，D比E简洁
194、这里的 anything ... synthesized同前面的color or flavor additives...不是同一类并列对象，所以or比较好地解决了这个问题，而and 在并列关系上有歧义
210、我觉得这里不可以省略，AND引导的并列的句子，而且主语发生了变化，其实B已经是省略句了。从句和分词在这里我觉得不是判断的依据。

同意, 补一点, 第三题是SO的固定用法