安全帽的作用是用于保护（），防撞击、挤压伤害的护具。A、头部_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

安全帽的作用是用于保护（），防撞击、挤压伤害的护具。

A、头部

B、腰部

C、腿部

D、背部

答案

参考答案：A

选择题

已知全集U=R，集合A={x|2^x＞1}，B={x|x²-3x-4＞0}，则A∩C_UB=（　　）

A．{x|0≤x＜4}

B．{x|0＜x≤4}

C．{x|-1≤x≤0}

D．{x|-1≤x≤4}

选择题

看图选择最佳答案。

( )1. —            ?
           —I'm fine. Thanks.
           A. How old are you
           B. What's your name
           C. Nice to meet you
           D. How are you
( )2. —              ?
           —It's beside the chair.
           A. What's this
           B. What is it
           C. Where is it
           D. What's your name
( )3. —How's the weather?
           —                ?
           A. It's the sun
           B. It's over there
           C. It's sunny and windy
           D. It's sunny but windy
(    )4. —               ?
           —It's Tuesday, April first.
           A. What is it
           B. How's the weather
           C. What day is it today
           D. Where is it