Dick made a phone call to his wife, _____爱下问搜题

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问题选择题

Dick made a phone call to his wife, ________ was certain about where the car key was.

A．which

B．what

C．it

D．who

答案

答案：D

填空题

比较大小：-

．（填“＞”，“＜”号）

单项选择题

UML活动图用于系统的功能建模，并强调对象间的控制流。在以下4种UML图形中，（）是一个UML活动图。

A.A

B.B

C.C

D.D