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【简答题】
设集合U={1，2，3，4，5,6}，A={1，3，5},B={3，4，5}，则ðu(A∪B) (A){2,6} (B){3,6} (C){1,3,4,5} (D){1,2,4,6}
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举一反三
【单选题】简易人寿保险保费和普通人身的保费关系是
A.
简易人寿保险保费略低于普通人身的保费
B.
简易人寿保险保费等于普通人身的保费
C.
简易人寿保险保费略高于普通人身的保费
D.
无法比较
【单选题】Who do you suggest _______in charge of this matter? [ ]
A.
is
B.
will be
C.
that is
D.
be
【单选题】以下对视听媒体教学系统的描述错误的是
A.
教学光盘播放系统主要功能是播放视频教学资料。
B.
在使用话筒时，为了测试话筒是否正常，可以对话筒吹气或拍打。
C.
数字广播系统主要用于课堂语音教学、广播、播控管理等。
D.
可以利用数字广播系统模拟音响。
【单选题】No matter who you are or where you come from, one thing is certain: you are acquainted with the mosquito(蚊子)—although you probably wish you weren t. Mosquitoes are everywhere. They can be found all ov...
A.
don' t like mosquito but it is always there
B.
know mosquito and wish them well
C.
wish all the mosquito disappeared
D.
want to be friendly to mosquito but fail at last
【单选题】Cheer up! No matter how ________ you progress, you are ahead of those who never tried.
A.
slowly
B.
quickly
C.
bravely
D.
willingly
【单选题】—____? —I have a stomachache. [ ]
A.
Who are you
B.
What's the matter
C.
How are you
D.
What are you
【单选题】( )--1________? --I have a headache. A What ’ s the matter? B Where are you ? C Who are you ? D What are you doing ?
A.
What’s the matter?
B.
Where are you ?
C.
Who are you ?
D.
What are you doing ?
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