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【多选题】
传输距离在500米以上的的无线通信标准有：()A.
IEEE802.a
B.
IEEE802.b
C.
IEEE802.g
D.
IEEE802.w
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反馈参考答案：
举一反三
【单选题】Mary often forgets ________ her English book.
A.
bring
B.
brought
C.
is bringing
D.
to bring
【单选题】Mary ______ down the, notes on the board into her book.
A.
copied
B.
wrote
C.
describe
【简答题】'Mary gave a book to Jack' is synonymous with 'Jack______a book from Mary. '(北二外2005研)
【单选题】Mary is looking for the book she lost yesterday
A.
trying to find
B.
trying to read
C.
trying to buy
D.
trying to borrow
【单选题】— What's this in English? — It's _____ English book. _____ book is Mary's. [ ]
A.
a, The
B.
an, A
C.
an, The
【单选题】Mary hit Jack _____ the head _____ a book. [ ]
A.
at; with
B.
on; with
C.
on; by
D.
in; by
【单选题】John is collaborating with Mary in writing a book.
A.
cooperating
B.
merging
C.
combining
D.
associating
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