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【简答题】
高速铁路的轨道结构大体可分为（）轨道和（）轨道两种类型。
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【单选题】In the first part of Gulliver’s Travels, Gulliver told this experience in ( ).
A.
Lilliput
B.
Brobdingnag
C.
Houyhnhnm
D.
England
【单选题】In the first part of Gulliver's Travels, Gulliver told his experience in ___________.
A.
Lilliput
B.
Brobdingnag
C.
Houyhnhnms
D.
Laputa
【单选题】In the first part of Gulliver’s Travels, Gulliver told his experience in _____.
A.
Brobdingnag
B.
Lilliput
C.
Flying lsland
D.
Houyhnhnm
【单选题】The books attempt _______ why it is and what we should do about it.
A.
explaining
B.
to explain
C.
to be explained
D.
being explained
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