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9. ____ mechanical device has ever been invented that can satisfactorily replace teasel flower heads for raising the nap on cloth.
(A) No
(B) Not the
(C) Never has a
(D) There is no
[A],为什么d不行
25. Snakes are capable of graceful motion throughout the entire long of their rubbery
A B C
bodies.
D
应该怎么改呢?
37. Fibers can come from plants, animals, or mineral ores, or they may be made from a variety chemical substances.
[D]为什么是d
[此贴子已经被作者于2004-10-25 9:14:23编辑过] |