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【简答题】
一条曲线通过点(2，3)，它在两坐标轴间任意切线均被切点平分，求此曲线的方程．
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反馈参考答案：
举一反三
【单选题】There are so many good books. I really don’t know ____ .
A.
to choose which one
B.
choose which one
C.
to which one choose
D.
which one to choose
【单选题】To be honest, the role John plays in this film doesn't come up to my __________, though he is one of my favorite actors . [ ]
A.
excuses
B.
explanations
C.
experiences
D.
expectations
【单选题】There're so many beautiful gifts in the shop, but I don't know ________. [ ]
A.
to choose which one
B.
what choose
C.
which one to choose
D.
to choose what
【单选题】We have 3 rooms ____________ , but I can’t decide ____________ .
A.
to live, to choose which one
B.
lived, choose which one
C.
to live in, which one to choose
D.
live, which one
【单选题】The suits look _____ beautiful _____ I don't know _____. [ ]
A.
too; to; which one to choose
B.
so; that; which one to choose
C.
so; that; choose which one
D.
too; to; which to choose
【单选题】. There is such an occasion ___________ we know lots of words, but we can’t choose a suitable one to express ourselves.
A.
where
B.
when
C.
which
D.
what
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