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标题: 求助老题：大全-I-12 [打印本页]

作者: pinkpiggy 时间: 2004-9-10 10:10
标题: 求助老题：大全-I-12
M-I-12
12. A newly discovered disease is thought to be caused by a certain bacterium. However, recently released data notes that the bacterium thrives in the presence of a certain virus, implying that it is actually the virus that causes the new disease.

Which of the following pieces of evidence would most support the data’s implication?

(A) In the absence of the virus, the disease has been observed to follow infection by the bacterium.

(B) The virus has been shown to aid the growth of bacterium, a process which often leads to the onset of the disease.

(D) In cases where the disease does not develop, infection by the bacterium is usually preceded by infection by the virus.（C）

(E) Onset of the disease usually follows infection by both the virus and the bacterium.

I faced dilemma between C and D...but Why do not D?em06]

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帮帮忙，谢谢啦

作者: pinkpiggy 时间: 2004-9-10 10:58

没人吗？哎，先顶一下

作者: pinkpiggy 时间: 2004-9-10 11:02
p.s 为什么换了自己想用的头像，就显示不出来了？

作者: 唐三彩 时间: 2004-9-10 13:23

不知道你是如何理解D的。。。。我的理解是：

在A病没有出现的情况下，被细菌感染的症状比被病毒感染的症状早出现------这个选项似乎是个weaken，至少不能说明是病毒感染导致的A病出现。。。。

请指正。。。

[此贴子已经被作者于2004-9-10 13:23:36编辑过]

作者: pinkpiggy 时间: 2004-9-10 13:49

抱歉，俺语文太差，把precede当成在什么之后了。。。。。

差得太远了~~~~~10月份打算考的。怎么办？

作者: pinkpiggy 时间: 2004-9-10 13:49
谢谢唐三彩啦。

作者: lawyer_1 时间: 2004-9-10 18:41

1。infection by the bacterium is usually preceded by infection by the virus。preceded是被动语态，所以应是先VIRUS感染，后BACTERIUM感染。

2。但D说得是没有病的情况，和原文结论的何原因导致该病没关系。

3。C说很多病没有BACTERIUM，独有VIRUS正好说明是VIRUS导致该病，如果是BACTERIUM导致该病，如何解释很多病没有BACTERIUM的存在

作者: pinkpiggy 时间: 2004-9-10 21:00

再次感谢，

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