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【单选题】
— Do you have any problems _______ your English? — No, I don’t. But I have some maths problems _______.A.
on, to solve
B.
with, solving
C.
on, solving
D.
with, to solve
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【单选题】As soon as _____ concert film 'This Is It' was released on October 28th, it became _____ great success in all big cinemas across the planet. [ ]
A.
a; the
B.
the; a
C.
the; 不填
D.
a; a
【简答题】试述空气滤清器的功用。
【单选题】The celebration of Valentine's Day became unfashionable in the ______ century.
A.
14th
B.
15th
C.
17th
D.
19th
【简答题】被称为“几何之父”的是（）
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