169.
Seismologists studying the earthquake that struck northern California in Octorber 1989 are still investigating some of its mysteries: the unexpected power of the seismic waves, the upward thrust that threw one man straight into the air, and the strange electromagnetic signals detected hours before the temblor.
(A) the upward thrust that threw one man straight into the air, and the strange electromagnetic signals detected hours before the temblor
(B) the upward thrust that threw one man straight into the air, and strange electromagnetic signals were detected hours before the temblor
(C) the upward thrust threw one man straight into the air and hours before the temblor strange electromagnetic signals were detected
(D) one man was thrown straight into the air by the upward thrust, and hours before the temblor strange electromagnetic signals were detected
(E) one man who was thrown straight into the air by the upward thrust, and strange electromagnetic signals that were detected hours before the temblor
我想請問的是, 為什麼答案是A而不是B,
signals不是應該"被"偵測的嗎?
希望不是問了一個太白痴的問題,
還請高手幫幫我,謝謝!!