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

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. 我也是根据rather

than 的前后对称，锁定了本定答案。但题是做对了，但怎么也读不懂此题，有高

手能帮忙翻成中文吗？

老师上课讲过，大致意思如下：

在metalwork中，面粘的方法比点焊的方法有一个优势在于，接触的地方是一个大面积，

而不是彼此无关的点