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【简答题】
公共物品为什么会造成市场失灵?
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反馈参考答案：
举一反三
【单选题】It was in the street __ this little girl saw a great scientist named Einstein for the first time in her life
A.
where
B.
on which
C.
that
D.
who
【单选题】Tom plunged into the pond immediately when he saw a boat was sinking and a little girl in it was
A.
in need
B.
on the decline
C.
in disorder
D.
at stake
【简答题】进气歧管绝对压力传感器是一种间接检测 的传感器。
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