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Doppler effect

Expert replies
by lav » Mon Jun 15, 2009 3:43 am
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) Using a Doppler ultrasound device, a physician can detect fetal heartbeats by the twelfth week of pregnancy.

OA is E
Why is D wrong ? What changes should i make to it to make it correct ??

i choose the correct answer i am just inquisitive that why is D wrong
Kid in Verbal :(
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Source: — Sentence Correction |

Re: Doppler effect

by Vemuri » Mon Jun 15, 2009 4:15 am
The original sentence has a modifier issue. Who is using the Doppler ultrasound device?

As for D, the sentence is in passive voice. That's why E is preferable to D.
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by maverick2000 » Mon Jun 15, 2009 4:51 am
D has passive voice and awkward construction. In E, first of all subject is added and secondly, it is close to the modifier. So E is more appropriate.
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