Question

I will never understand how it         that you were an hour late on such a short journey.

A．came about

B．came across

C．came out

D．came up with

Answer 1

A

试题分析：句意，我永远也不会明白，这么短的路程，你居然迟到了一小时，这是怎么发生的。came about发生 came across偶然遇到 came out出版 came up with提出，根据题意，故选A。
点评：解答这类题目，关键是理解题干意思以及各选项词组的意思，可以像数学中的代入法一样，依次把各个选项意思放入句子中进行比较，不难选出正确答案。