OG SC23 由官方解释引发的疑惑~求教NN们

林木萧 · 发表于 2011-12-9 20:55:42

23 In a previous design, the weight of the discus used in track competition is concentrated in a metal center， but now it is lined with lead around the perimeter, thereby improving stability in flight and resulting in longer throws.

(A)In a previous design, the weight of the discus used in track competition is concentrated in a metal center, but now it is
In a previous design, the weight of the discus used in track competition is concentrated in a metal center, but now it is

(B)According to a previous design, the weight of the discus used in track competition was concentrated in a metal center, but now it is

(C)Once designed with its weight concentrated in a metal center, the discus used in track competition is now

(D)The discus used in track competition, once designed with its weight concentrated in a metal center, but now

(E)The discus used in track competition was once designed having its weight concentrated in a metal center and now

答案选对，其他解释基本懂，但是E中“the sentence is missing a main verb in the final phrase” 这句话的意思是 thereby improving stability in flight and resulting in longer throws 缺少动词吗？如果加上动词的话，那就不是伴随状语了，就会前面的句子构成并列？LZ凌乱了，求NN们解释

HarrisZheng · 发表于 2011-12-10 02:55:41

Now 后面要有is 这就是那个动词

liulu007 · 发表于 2011-12-16 20:47:21

我也不太清楚OG的解释是什么意思，我怎么都看不出D和E哪里缺少主要动词，我当时选是觉得E当中有and 那么，was once designed 就得和 is now lined 平行，才排除的。同求NN解释D,E。谢谢。

liulu007 · 发表于 2011-12-16 21:11:29

又仔细看了遍解释，有点小小的理解。贴上来大家一起讨论下哈。
选项(E)The discus used in track competition was once designed having its weight concentrated in a metal center and now
这道题未画线的部分lined with lead ……应该也是指前面的主语，也就是the discus，那么把它和lined with lead 联系起来，不难发现应该少了一个is这个动词。和选项D是同样的错误。不知道这么理解OG的解释对不对。欢迎找错哦。

HarrisZheng · 发表于 2011-12-19 19:03:38

又仔细看了遍解释，有点小小的理解。贴上来大家一起讨论下哈。
选项(E)The discus used in track competition was once designed having its weight concentrated in a metal center and now
这道题未画线的部分lined with lead ……应该也是指前面的主语，也就是the discus，那么把它和lined with lead 联系起来，不难发现应该少了一个is这个动词。和选项D是同样的错误。不知道这么理解OG的解释对不对。欢迎找错哦。

-- by 会员 liulu007 (2011/12/16 21:11:29)

完全正确

本贴相关题目 OG-12-SC-23 | GMATPrep-2008E2-SC-160 (JDBO)

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