某债券市场发行三种债券,A种面值为100元,一年到期本息和为103元;B种面值为

题型:选择题

问题:

某债券市场发行三种债券,A种面值为100元,一年到期本息和为103元;B种面值为50元,半年到期本息和为51.4元;C种面值为100元,但买入价为97元,一年到期本息和为100元。作为购买者,分析这三种债券的收益,从小到大排列为[ ]

A.B,A,C

B.A,C,B

C.A,B,C

D.C,A,B

考点:一次函数的性质与应用
题型:选择题

头部受到撞击后,立即发生一过性神经功能障碍,无肉眼可见的神经病理改变,为()

A.脑裂伤

B.脑挫伤

C.脑震荡

D.急性硬膜下血肿

E.急性硬脑膜外血肿

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以下交换机中支持跨单板端口聚合的是()。

A.S8500

B.S6500

C.S5600

D.S3900

题型:选择题

Excel能识别五种类型的数据:数值、日期、时间、正文和______。

题型:选择题

Why do people drink too much, eat too much, smoke cigarettes or take drugs? What’s to blame for all the bad behavior? Most people would say that, while these self-destructive acts can have many root causes, they all have one obvious thing in common: they are all examples of failures of self-control, lacking the will power to resist them.

According to a recent study, however, if you really think about it, something about that simple answer doesn’t quite make sense. In fact, it turns out that sometimes it’s having will power that really gets you into trouble.

Think back to the time you took your very first sip of beer. Disgusting, wasn’t it? When my father gave me my first taste of beer as a teenager, I wondered why anyone would voluntarily drink it. And smoking? No one enjoys their first cigarette — it tastes awful. So even though smoking, and drinking alcohol or coffee, can become temptation(attraction) you need will power to resist, they never, ever start out that way.

Just getting past those first horrible experiences actually requires a lot of self-control. Ironically (讽刺的是), only those who can control themselves well, rather than give in to them, can ever come to someday develop a “taste” for Budweiser beer, Marlboro cigarettes, or dark-roasted Starbucks coffee. We do it for social acceptance. We force ourselves to consume alcohol, cigarettes, coffee and even illegal drugs, in order to seem experienced, grown-up, and cool.

These bad habits aren’t self-control failures — far from it. They are voluntary choices, and they are in fact self-control successes. Self-control is simply a tool to be put to some use, helpful or harmful. To live happy and productive lives, we need to develop not only our self-control, but also the wisdom to make good decisions about when and where to apply it.

小题1:What do most people think causes bad behavior?

A.Being forced by others.

B.Not having enough will power.

C.Enjoying their first experiences.

D.Following the examples of their friends.小题2:The author mentions his experience in the third paragraph to prove ____.

A.will power helps develop bad habits sometimes

B.drinking beer is harmful to the health of teenagers

C.self-control should be developed when one is young

D.everyone can be challenged by different temptations小题3:In the last paragraph, the author stresses(强调) that ____.

A.without self-control, no one can succeed

B.bad habits don’t always lead to bad results

C.applying self-control correctly is important

D.people can develop wisdom from bad behavior小题4:What would be the best title for the passage?

A.My First Sip of Beer

B.Do You Have Will Power ?

C.Will Power Benefits Us

D.Dark Side of Self-control

题型:选择题

关于IP协议的描述中,错误的是( )。

A.IP协议提供尽力而为的数据报投递服务

B.IP协议提供可靠的数据传输服务

C.IP协议是一种面向无连接的传输协议

D.IP协议用于屏蔽各个物理网络的差异

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