— Spacecraft “Discovery” has failed in the course of launch.— _______? They have been preparing for

题目简介

— Spacecraft “Discovery” has failed in the course of launch.— _______? They have been preparing for

题目详情

— Spacecraft “Discovery” has failed in the course of launch.
— _______? They have been preparing for the test.
A.How comeB.WhenC.HowD.Why not
题型:单选题难度:中档来源:不详

答案

A。
how come在这里的意思是“怎么回事?”,表示不解,惊讶。

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