[求助]OG 44题

Using a Doppler ultrasound device, fetal heartbeats can be detected by the twelfth week of pregnancy.

(A) Using a Doppler ultrasound device, fetal heart-beats can be detected by the twelfth week of pregnancy.

(B) Fetal heartbeats can be detected by the twelfth week of pregnancy, using a Doppler ultrasound device.

(C) Detecting fetal heartbeats by the twelfth week of pregnancy, a physician can use a Doppler ultrasound device.

(D) By the twelfth week of pregnancy, fetal heartbeats can be detected using a Doppler ultrasound device by a physician.（E）

(E) Using a Doppler ultrasound device, a physician can detect fetal heartbeats by the twelfth week of pregnancy.

OG上，对D的解释：

In choice D the phrase using... device should follow physician, the noun it modifies.

难道说D改成： By the twelfth week of pregnancy, fetal heartbeats can be detected by a physician using a Doppler ultrasound device，这样就对了吗？

就像你所改以后,仍然不如E好,因为被动显得罗嗦.

另外,从句意上,好像D把By the twelfth week of pregnancy提前,修饰整个句子,而不是修饰fetal heart-beats ,改变了句子的原意, 不知道本人理解是否正确,请牛人指正,谢谢.

我对OG对于D选项的修改建议也不是狠理解，有NN能解释一下嘛？

In choice D the phrase using... device should follow physician, the noun it modifies.这里所说的修改方法是楼主说的那样嘛？

楼主的修改是对的。但是还是没有E选项好，比E罗嗦。自己体会一下。

我也有这个疑惑。搂住这样该行不行呢？先不考虑wordy的问题，但看语法结构和逻辑意思是否可行。

请指教？谢谢谢谢谢

大家的问题都是越来越高级了!

个人观点是OG这么说是想避免分词主语的歧义, 如果分词在句子中间, 前面又有名词, 则比较容易歧义, 就好想这题会歧义为fetal heartbeats

以下是引用summersmile在2004-11-11 0:04:00的发言：
by引导时间状语在D,E两项中位置不同，对整个句子的把握到底有没有影响？[

ding

same question

我觉得本来By the twelfth week of pregnancy也不是修饰fetal heart-beats ,而是修饰谓语动词detect.

提前以后是否有歧异我说不上来

请nn执教

我不同意！我認為by the twelfth week of pregnancy就是用來修飾fetal heart beats的～看正確的E選項就知道了～而且”懷孕12週”修釋"偵測”detect太怪了～應該是”懷孕12週大的嬰兒的心跳”