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.
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答案(E)
這題很明顯考脫節
我想請問的是(C)選項的OG解釋
OG--> This sentence suggests that a physician first detects heartbeats and then uses the device.
我有點不了解的是
為什麼會有先後的句意產生呢
那(E)就沒有嗎
句子的文法不是都一樣嗎