气管厌氧菌感染出现（）。 A.大量脓痰 B.痰有臭味 C.黏脓痰 D.痰中带血 E.

The bicycle is really and important means of transportation in China.Bicyclese have become more and more popular in China.People ride bikes to their workplaces,to shopping centers,to schools,and so on.During the rush hour,you can often see a boiling sea of bicycles running in all directions.With the largest number of bike riders in the world,China is often referred to as the kingdom of bicycles.There are many advantages(优点) about the bicycle.For example,bicycles do not cause air or sound pollution(污染);compared with cars,bicycle cause no environmental(环境的) problems;bicycles save energy(能源) and parking place;riding bikes to travel can be a wonderful experience(经历);the bicycle allows us to go anywhere nearby easily;bikes are not very expensive,and almost every family can afford them;riding bikes regularly does good to people's health.

　　通读短文，然后根据短文内容回答问题。

小题1:Why is China called the kingdom of bicycles?

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小题2:Can we go anywhere easily by bicycles?

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小题3:Why can almost every family afford bicycles?

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小题4:What do you think the most popular means of transportation in China is?

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小题5:What are the advantages of the bicycles?You can give one or two examples.

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主动发起的大额支付系统往账业务必须在（）阶段前查询业务状态。

A.日间处理

B.业务截止

C.清算窗口

D.日终处理

如图6-1所示双代号网络计划的关键路线为（）。

A．①—⑧

B．①—②—⑥—⑧

C．①—③—⑦—⑧

D．①—④—⑤—⑦—⑧

在20下能溶于17.5%氢氧化钠溶液中的纤维素为（）。

A.α-纤维素

B.β-纤维素

C.γ-纤维素

D.半-纤维素

制定员工开发方案应遵循的原则有（）。

A.清晰性原则

B.一致性原则

C.合作性原则

D.实际性原则

E.公平性原则