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【单选题】
设集合U＝{－1,1,2,3}，M＝{x|x2－5x＋p＝0}，若∁UM＝{－1,1}，则实数p的值为( )A.
－ 6
B.
－ 4
C.
4
D.
6
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反馈参考答案：
举一反三
【简答题】西瓜果实生长三个阶段,坐瓜期从 到“ ” ;膨瓜期从“ ” 到定个;变色期从定个到成熟。
【简答题】What makes EcoNet distinctive is its (broad)______. It serves the largest number of users.
【单选题】The jettisoning of topside weight from a ship serves what purpose ()_.
A.
It returns the ship to an even keel
B.
It reduces free surface effect
C.
It lowers the center of gravity
D.
It raises the center of gravity
【单选题】What serves as a pump in the cardiovascular system?
A.
heart
B.
lungs
C.
stomach
D.
liver
【单选题】What does the sentence 'Work serves as a bridge between man and reality' mean?
A.
Working people are realistic (现实的).
B.
Work makes people realize there is a bridge.
C.
By work, we are in touch with people.
D.
We will not be real men if we don't work.
【单选题】—About income, I think most people deserve more than what they get. — ______.
A.
It serves you right
B.
You have a point
C.
Not likely
D.
Don’t mention it
【单选题】法国《费加罗报》1970年4月27日发表时事评论:“人们可以说,并且人们在说:中国是继苏联、美国、法国和日本之后的第五个空间大国。不,中国是第三个空间大国,实际上,凭时间的排列没有根据技术能力排列重要。”该评论可以佐证当时中国
A.
第一颗原子弹爆炸成功
B.
卫星发射技术取得重大突破
C.
载人航天技术成功实践
D.
“科教兴国”战略成效显著
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