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
答案是D,这五个选项都不同,无法根据差异对比,而且对句意的把握也不太清晰,不知道该如何下手。麻烦老师讲解。
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【请May老师回答】这题鸡精提供的答案是D 可是我觉得第二个条件不能得出呢 假设n三次方是x平方 除以n平方 是可以得到x/ n 平方 但是x/n 不一定是整数呀?