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SAT语法句子改进练习题(54)

2018-12-11 09:10:00来源:网络

  新东方在线SAT频道为大家带来“SAT语法句子改进练习题(54)”一文,希望对大家SAT备考有所帮助。更多精彩尽请关注新东方在线SAT频道!

  44. 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.

  Answer to Question 44

  Choice A presents a dangling modifier. The phrase beginning the sentence has no noun that it can logically modify and hence cannot fit anywhere in the sentence and make sense. Coming first, it modifies heartbeats, the nearest free noun in the main clause; that is, choice A says that the heartbeats are using the Doppler ultrasound device. Choice B contains the same main clause and dangling modifier, now at the end. Contrary to intent, the wording in choice C suggests that physicians can use a Doppler ultrasound device after they detect fetal heartbeats. In choice D the phrase using ... device should follow physician, the noun it modifies. Choice E is best.

  以上就为大家整理的“SAT语法句子改进练习题(54)”,更多精彩内容,请关注新东方在线SAT频道。

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