In metalwork one advantage of adhesive-bonding over spot-welding is that the contact, and hence the bonding, is effected continuously over a broad surface instead of a series of regularly spaced points with no bonding in between.
In commercial garment construction, one advantage of serging over single needle sewing is that the seam allowance is overcast as the seam is sewn instead of with a separate process requiring deeper seam allowances.
A) instead of with B) rather than in C) in contrast with D) as opposed to E) instead of 答案b
40. In metalwork one advantage of adhesive-bonding over spot-welding is that the contact, and hence the bonding, is effected continuously over a broad surface instead of a series of regularly spaced points with no bonding in between.
A. instead of B. as opposed to C. in contrast with D. rather than at E. as against being at
The corrected sentence must contrast an effect of spot-welding with an effect of adhesive-bonding. To do so logically and grammatically, it must describe the effects in parallel terms. When inserted into the sentence, D produces the parallel construction over a broad surface rather than at a series. Having no word such as over or at indicate location, choices A, B, and C fail to complete the parallel and so illogically draw a contrast between surface and series. In E, as against being is a wordy and unidiomatic way to establish the intended contrast. Choice D is best.
这里主要就是判断两个对比结构是否平行 x:(serging )over single needle sewing y:(serging )in a separate process 所以C,D,E选项都不能满足平行,因为y部分缺少个介词 剩下A,B。 我个人是觉得with表达的意思很显然没有in 好~~而且GMAT也更偏好rather than