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局域网按拓扑结构分类,可以把局域网分为 、 、 和 等类型。
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皮皮学刷刷变学霸
举一反三
【单选题】My brother met her at the Grand Theater yesterday afternoon, so she ______ your lecture.
A.
mustn't have attended
B.
needn't have attended
C.
shouldn't have attended
D.
couldn't have attended
【单选题】My brother _____ the Army for 3 years.
A.
has joined
B.
has joined in
C.
has been in
D.
has attended
【单选题】My brother______the army last year
A.
took part in
B.
joined
C.
attended
D.
went in for
【简答题】My brother ______ from a well — known American university. My parents attended his ______ ceremony yesterday. ( graduate )
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