（） software, also called end-user program_爱下问搜题

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问题单项选择题

（） software, also called end-user program, includes database programs, word processors, spreadsheets etc.

A．Application

B．System

C．Compiler

D．Utility

答案

参考答案：A

选择题

We have no idea at all __________.

A．where he has gone

B．where did he go

C．which place has he gone

D．where has he gone

单项选择题 A1/A2型题

二尖瓣位于（）

A.左房室口

B.右房室口

C.肺动脉口

D.主动脉口

E.冠状动脉口