题目内容
（请给出正确答案）
A.ignores differences in coupon rates across bonds.
B.assumes all the bonds have the same discount rate.
C.assumes all yields change by the same amount.
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更多“One reason why the duration of…”相关的问题
Why do I want to go to college？ No one has ever asked me 11 a question. But many times I have asked myself. I have 12 a whole variety of reasons. 13 important reason is that I want to be a better man. Many things make human beings different 14 or better than or even superior to animals. One of the most important things is 15. If I fail to receive higher education, my education 16. As I want to be a fully 17 man, I must get a well-rounded education, which good colleges and universities are supposed to 18. I know one can get educated in many ways, but colleges and universities are 19 the best places to teach me how to educate myself. Only when I am well-educated, will I be a better human being and 20 fit into society.
11、A.quite
B.so
C.such
D.another
12、A.come up with
B.agreed with
C.been fed up with
D.got on well with
13、A.Most
B.The most
C.More
D.Much
14、A.to
B.around
C.between
D.from
15、A.education
B.weather
C.temperature
D.science
16、A.finished
B.don’t finish
C.will not finish
D.has finished
17、A.develop
B.developed
C.developing
D.experience
18、A.improve
B.graduate
C.hear
D.provide
19、A.between
B.among
C.inside
D.outside
20、A.can good
B.may better
C.be able to better
D.able to best
Break-up
Once in a person's lifetime, everyone finds this one perfect person whom they fall hopelessly in love with and live happily with ever after. That is a mere fallacy. In the real world, this simply does not happen. Yes, people do have common interests and therefore develop romantic involvement, but it is basic common sense that these relationships have a life span and simply cannot last. Real life relationships are definitely more like "The Real World" rather than "Romeo and Juliet".
Romanticism is wonderful in itself, and thus two people can live in heavenly bliss, but it all must come to an end somehow. It is a fact of life that couples do break up, and there are many reasons why. There are countless reasons, ranging from cheating to abuse, attributing to breakups.
Wealth
One reason why couples might break up is money or a lack thereof. If one partner in a relationship is always paying or keeping up all the bills, his/her partner just might grow tired of it and decide that it is a valid reason to separate. For example, a woman who is always lending her boyfriend money for his rent, car note, and social expenses will probably eventually grow tired of it and leave him.
Addiction
More reasons why couples separate, addictions often result in ugly breakups. Whether it is an addiction to drugs, gambling, or whatever, hardly anyone would be willing to take that on an everyday basis. Most people would agree that it is not pretty to see someone throw their life away on addictions. It is simply not attractive and thus, not many people would want to be with someone with an extreme problem like that.
Physical Assets
An unfortunate reason for a breakup, physical disabilities, also occurs at times. This can range from a paralyzing accident to infertility. To some people, having children is the most important priority in their adult life. Having a partner who is unable to have children can very much hinder a relationship. Thus, it will not last. Likewise, having a partner who has a paralyzing disability might be too much for someone to take. Being with a person, who becomes handicapped, though unfortunate, is a big burden to place on a person.
Test of Time and Distance
Growing apart, an instance in which two people just do not feel attraction towards each other anymore is very commonplace, resulting in an end of a relationship. Some couples simply "fall out of love". Some people can only stand so much of another person before they grow tired of the situation. Also, it could be as a result to distance. For example, when a couple who were together in high school go their own ways in choosing colleges, this, more often than not, results in the couple breaking up. A long distance relationship like that simply does not work out often.
"I Want the Better."
In direct relation to growing apart, a person sometimes finds another person besides their boy/ girlfriend who they are attracted to. Finding somebody "better" will kill a relationship quickly, and start a new relationship, If a person finds someone more attractive than the person they are currently with, they might have to weigh their options and decide that they want to go another direction.
Cheating
Likewise, when a person finds someone they like, this could result in cheating, another reason why couples break up. If a guy catches his girlfriend cheating on him, or vice versa, this could very well be a valid reason to end that relationship. Finding someone cheating leads to a lack of trust and thus, kills the relationship.
Abuse
Also, another very serious reason resulting in a break-up is abuse. When someone abuses his or her girlfriend, spouse, or children, a break-up is definitely necessary. Someone who is taking abuse is playing with f
A．Y
B．N
C．NG
问题：Why does the author think that encoding properly is very important？
A.It helps us understand our memory system better.
B. It enables us to recall something form our memory.
C. It expands our memory capacity considerably.
D.It slows down the process of losing our memory.
One possible reason why women have better memories than men is thatA.they have a wider range of interests
B.they are more reliant on the environment
C.they have an unusual power of focusing their attention
D.they are more interested in what's happening around them
？？One possible reason why women have better memories than men is that
？？A.they have a wider range of interests
B.they are more reliant on the environment
C.they have an unusual power of focusing their attention
D.they are more interested in what's happening around them
请帮忙给出每个问题的正确答案和分析，谢谢！
Not long ago, experiments showed that birds rely on the sun to guide them during daylight hours. But what about birds that fly by night？ Tests with artificial stars have proved that certain night-flying birds are able to follow the stars in their long-distance flights.
A dove had spent its lifetime in a cage and had never flown under a natural sky. Yet it showed an inborn ability to use the stars for guidance. The bird's cage was placed under an artificial star-filled sky. The bird tried to fly in the same direction as that taken by his outdoor cousins. Any change in the position of the artificial stars caused a change in the direction of his flight.
But the stars are apparently their principal means of navigation. When the stars are hidden by clouds, they apparently find their way by such landmarks as mountain ranges, coast lines, and river courses. But when it's too dark to see these, the doves circle helplessly, unable to find their way.
The reason why birds don't get lost on long flights ______.
A．have been known to scientists for years
B．have only recently been discovered
C．are known by everyone
D．will probably remain a mystery
A scientist is apt to think that all the problems of philosophy will ultimately be solved by science. I think this is true for a great many of the questions on which philosophers still argue. For example, Plato thought that when we saw something, one ray of light came to it from the sun, and another from our eyes and that seeing was something like feeling with a stick. We now know that the light comes from the sun, and is reflected into our eyes. We don't know in much detail how the changes in our eyes give rise to sensation. But there is every reason to think that as we learn more about the physiology of the brain, we shall do so, and that the great philosophical problems about knowledge are going to be pretty fully cleared up.
But if our descendants know the answers to these questions and others that perplex us today, there will still be one field of which they do not know, namely the future. However exact our science; we cannot know it as we know the past. Philosophy may be described as argument about things of which we are ignorant. And where science gives us a hope of knowledge it is often reasonable to suspend judgment. That is one reason why Marx and Engels quite rightly wrote to many philosophical problems that interested their contemporaries.
But we have got to prepare for the future, and we cannot do so rationally without some philosophy. Some people say we have only got to do the duties revealed in the past and laid down by religion, and god will look after the future. Others say that the world is a machine and the course of future events is certain, whatever efforts we may make. Marxists say that the future depends on ourselves, even though we are part of the historical process. This philosophical view certainly does inspire people to very great achievements. Whether it is true or not, it is powerful guide to action.
We need a philosophy, then, to help us to tackle the future. Agnosticism easily becomes an excuse for laziness and conservatism. Whether we adopt Marxism or any other philosophy, we cannot understand it without knowing something of how it developed. That is why knowledge of the history of philosophy is important to Marxists, even during the present critical days.
What is the main idea of this passage？
A．The argument whether philosophy will ultimately be solved by science or not.
B．The importance of learning philosophies, especially the history of philosophy.
C．The difference between philosophy and science.
D．A discuss about how to set a proper attitude towards future.
A.creation of organizational structure
B.facilitation and achievement of goals
C.employees can be directed
D.goals can be guaranteed
E.employees can be motivated
Why would things weigh only a quarter as much as they do at the surface of the earth if we took them 4,000 miles out into space？ The reason is this: All objects have a natural attraction for all other objects; this is called gravitational attraction, but this power of attraction between two objects gets weaker as they get farther apart. When the butter was at the surface of the earth, it was 4,000 miles from the center (in other words the radius[半径] of the earth is 4,000 miles). When we took the butter 4,000 miles out, it was 8,000 miles from the center, which is twice the distance.
If you double the distance between two objects, their gravitational attraction decreases (减少) two times two. If you treble (成三倍) the distance, it gets nine times weaker (three times three). If you take it four times as far away, it gets sixteen times weaker (four times four ) and so on.
The best title for this passage is______.
A．The Earth Weight
B．Weight in Space
C．Changing Weight on the Earth
D．Weight on and off the Earth
