Question

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請問22為什麼不能選A，不是被動式嗎？be+pp

Passage 1
21 sensory
The human brain is a remarkably complex organic computer, taking in
experiences, processing and storing this information, and recalling and integrating selected bits at
22 by Alzheimer's disease has been likened to the erasure
the right moments. The destruction
of a hard drive, beginning with the most recent files and working backward. As the illness
23 new memories gradually disappear until even loved ones are no longer
progresses, old
24
recognized. Unfortunately, the computer analogy
; one cannot simply reboot the human
brain and reload the files and programs. The problem is that Alzheimer's disease does not only erase
more than 100 billion
information; it destroys the very hardware of the brain, which
nerve cells (neurons), with 100 trillion connections among them.
21. (A) a scanty touch with (B) a wide variety of (C) face-to-face
(C) that caused
B
22. (A) was caused
(B) causing
25
(D) a full volume of
(D) caused

Answer 1

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W35L3Y

要是用was caused 那麼The destruction was caused by Alzheimer’s 這裡本身就是一個完整句後面的has been就變成多餘的了。所以前面應該是which was caused by… 以子句的方式呈現，然後which was caused簡化為caused

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