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问题 选择题

A lot of people attach great importance _____ rich and famous. [ ]

A. becomes

B. to become

C. to becoming

D. for becoming

答案

答案：C

单项选择题

To a router, a flow is a (1) of packets that share the same Characterstics, such as traveling the same (2) ,using the same (3) ,having the same kind of security, and so on. A router that supports the handling of flow labels has a (4) table. The table has an entry for each active flow label; each entry defines the (5) required by the corresponding flow label.

5（）

A．quality

B．Traffic

C．services

D．route
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单项选择题

牡丹灵通卡异地挂失可以使用下列哪种方式办理。（）

A、正式挂失

B、书面挂失

C、口头挂失

D、印鉴挂失
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