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C，OG11-104 裡頭寫答案是C

以下是OG的解釋

And not is an awkward way to establish a contrast;instead of, rather than , or unlik are more appropriate idioms to express a contrast.  The comma following bombs is paired with the commna following apart, and theis comma pair sets off the participial phrase introduced by merging. As introduces a clause; since a clause requires a subject and a verb, as cannot be followed by the prepositional phrase in nuclear reactors.

C. correct. Rather than  is a correct idiom for comparison in this sentence; as is follwed by a clause with a subject, nuclear reactors, and a verb, do;  the cpmparison is clear and complete.