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【简答题】
已知抛物线关于x轴对称,它的顶点在坐标原点,并且经过点 ,求它的标准方程,并用描点法画出图形.
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知识点:
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举一反三
【单选题】当用内缩法来确定验收极限时,上验收极限与最大极限尺寸存在什么关系?
A.
大于
B.
小于
C.
等于
D.
以上选项都错误
【单选题】— I’m afraid that I can’t finish reading the novel within three days. —__________.
A.
That’s right
B.
Not at all
C.
Take your time
D.
Please go ahead
【单选题】听力原文:W: Will you lend me the book? I'm sure I can finish reading it before Friday. M: I do think that I myself should be the first reader. Will the woman get the book she wants?
A.
No, she won't.
B.
Yes, she will.
C.
Yes, but after Friday.
D.
Yes, but she must return it.
【多选题】一个947人的群体,M血型348人,N血型103人,MN血型496人,则
A.
M血型者占36.7%
B.
M基因的频率为0.63
C.
N基因的频率为0.63
D.
MN血型者占52.4%
E.
N血型者占36.7%
【单选题】You can have these magazines ________ I finish reading them.
A.
so that
B.
because
C.
unless
D.
as soon as
【单选题】—Can the boy finish _____ the book in about a week? —I think he can. [     ]
A.
read
B.
reading
C.
to read
D.
reads
【单选题】开展道德评价具体体现在茶艺人员之间 ( )。
A.
团茶
B.
饼茶
C.
散茶
D.
粒茶
【单选题】I think you can have the magazine I finish reading it myself. [     ]
A.
the moment
B.
unless
C.
so that
D.
because
【单选题】____ frightened us ______ a tiger turned up suddenly in front of us. [     ]
A.
What; was that
B.
What; was
C.
It; that was
D.
It was; that
【单选题】引起水体溶解氧含量下降的主要污染物质是
A.
放射性污染物质
B.
氟化物
C.
氯化物
D.
有机物
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