题目内容
（请给出正确答案）
A、decline over time, reaching par value at maturity.
B、increase over time, reaching par value at maturity.
C、be less than the face value at maturity.
D、exceed the face value at maturity.
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第1题
第2题
??Nearly five million people see Grand Canyon each year.
??Most of them see it from their Cars at overlooks along the South Rim.The South Rim is the easiest to reach in the park.????
??The South Rim is open 24 hours a day,365 days a year.Services are provided and facilities (设施) are open year round.??
??A much smaller number of people see the Canyon from the North Rim,which lies just miles directly across the Canyon from the South Rim。The North Rim rises a thousand feet higher than the South Rim and is more difficult to reach.Heavy snows close the road to the North Rim from late October to mid—May of each year.Even in good weather it&39;s harder to get to.??
??The inner canyon includes everything below the rim and is seen mainly by campers,mule(骡子) riders,or river runners.There are many opportunities here for adventurous persons who want to camp,ride a mule to Phantom Ranch,or take a fiver trip though the Canyon on the Colorado River.??
??Visitor services and facilities inside the national park on the Noah Rim are only open frommid-May to late October.Weather permitting,the North Rim is open for day use only,following the close of facilities in late October.During this time there are neither services nor overnight facilities.??
??What do we learn from the passage about the South Rim???
??A.It is lower than the Noah Rim.
B.It is hard to get，to even in good weather.
C.It is not open in winter months.
D.It attracts over five million visitors each year.
From late October to mid May the North Rim.A.many mule riders come to
B.heavy snows.block the way to
C.services are provided 24 hours on
D.the weather is usually pleasant on
??To see the inner part of the Canyon visitors can _______.??
A.follow the mules passing by
B.drive a car to Phantom Ranch
C.have campers take them there
D.take a trip on the Colorado River
The article is most probably from_______.A.a history book for children
B.a guidebook for tourists
C.a newspaper for businessmen
D.a magazine for sportsmen
请帮忙给出每个问题的正确答案和分析，谢谢！
第3题
A.It is lower than the Noah Rim．
B.It is hard to get，to even in good weather．
C.It is not open in winter months．
D.It attracts over。five million visitors each year．
第4题
A、CO2 is diffused by active transport.
B、CO2 is diffused by facilitated transport.
C、difference of partial pressure of CO2 is higher than that of O2.
D、molecular weight of CO2 is higher than O2.
E、solubility of CO2 in water is higher than that of O2.
第5题
A、solubility of CO2 in water is higher than that of O2.
B、CO2 is diffused by active transport.
C、CO2 is diffused by facilitated transport.
D、difference of partial pressure of CO2 is higher than that of O2.
E、molecular weight of CO2 is higher than O2.
第6题
Let us remember, also, that conservation does not stop with the natural resources. The principle of making the best use of all we have requires that we stop the waste of human life in industry and prevent the waste of human welfare which flows from the unfair use of concentrated power and wealth in the hands of men whose eagerness for profit blinds them to the cost of what they do. We have no higher duty than to promote the efficiency of the individual. There is no surer road to the efficiency of the nation.
What plays an essential role in making the nation prosperous according to this passage?
A．Its money.
B．Its trade.
C．Its natural resources,
D．Its people.
第7题
第8题
Among American financial commentators, it is almost universally accepted that shares always rise over the long run. And one ought to expect shares (which are risky) to deliver a higher return than risk free assets such as government bonds.
Nevertheless, investors ought also to remember the world's second largest economy, Japan. Its most popular stock-market average, the Nikkei 225, peaked at 38,915 on the last trading day of the 1980s; this week, nearly 18 years later, it is still only around 17,000, less than half its peak. Buying on the dips did not work either.
Professionals of the London Business School examined the record of 16 stock markets which were in continuous operation over the course of the 20th century. In itself, this selection showed survivorship bias by excluding the likes of Russia and China. The academies found that only three other countries could match the American record of having no 20-year periods with negative real returns.
Other investors were far less lucky. Japanese, French, German and Spanish investors all suffered instances where they had to wait 50—60 years to earn a positive real return. It was no good following the famous advice to "put the shares in a drawer and forget about them"; the furniture would not have lasted that long.
Besides survivorship bias, there is another problem with the belief that stock markets must always go up. Investors will keep buying until prices reach stratospheric(稳定的) levels. That clearly happened in Japan in the late 1980s, and after seven years, it is still not much more than half its peak level.
A significant proportion of the return from equities in the second half of the 20th century came from a re-rating of shares; investors were willing to pay a higher multiple for profits. But re-rating cannot continue forever.
If investors want a simple parallel with share prices, they need only mm to the American housing market. Back in 2005 an economic adviser to the president said", we've never had a decline in housing prices on a nationwide basis. What I think is more likely is that house prices will slow, maybe stabilize".
Lots of people took the same view and were willing to borrow (and lend) on a vast scale on the grounds that higher house prices would always bail them out. They are now counting their losses. Investors in equities should beware of over-committing themselves on the basis of a similar belief Just ask the Japanese.
The word "dips" (Line 1, Paragraph 1) means that ______.
A．a place where the surface of something reaches its climax.
B．a place where the surface of something goes up suddenly and rapidly.
C．a place where the surface of something goes down suddenly then goes up again.
D．a place where the surface of something reaches its lowest point then goes up.
第9题
A．It is natural for mountain lakes to have acidity levels higher than those of other lakes.
B．The harmful effects of increased acidity levels in lakes have been greatly underestimated.
C．Acid rain is found in urban and heavily industrialized regions of the country.
D．There is much disagreement among soil scientists about the causes of acid rain.
E．While plant life remains, acid rain significantly increases the amount of decaying organic matter in natural environments.
第10题
Young adults who are fit have a higher IQ and are more______【51】to go on to university, reveals a major new study carried out at the Sahlgrenska Academy and Sahlgrenska University Hospital.
The results were recently published in the Proceedings of the National Academy of Sciences ( PNAS). The study involved 1. 2 million Swedish men doing military service who were born between 1950 and 1976. The research group analyzed the______【52】of both physical and IQ tests the youngsters took right after they started serving the army.
The study shows a clear link______【53】good physical fitness and better results for the IQ test. The strongest links are for______【54】thinking and verbal comprehension. But it is only fitness that plays a______【55】in the results for the IQ test, and not strength. "Being fit means that you also have good heart and lung______【56】and that your brain gets plenty of______【57】, " says Michael Nilsson, professor at the Sahlgrenska Academy and chief physician at the Sahlgrenska University Hospital. "This may be one of the reasons______【58】we can see a clear link with fitness, but not with muscular______【59】. We are also seeing that there are growth factors that are important. "
By analyzing data for twins, the researchers have been______【60】to determine that it is primarily environmental factors and not genes that explain the link between fitness and a______【61】IQ.
" We have also shown that those youngsters who______【62】their physical fitness between the ages of 15 and 18 increase their cognitive performance, " says Maria Aberg, researcher at the Sahlgrenska Academy and physician at Aby health centre. "This being the case, physical______(63 ) is a subject that has an important place in schools, and is an absolute must if we want to do well in maths and other theoretical subjects. "
The researchers have also compared the results from fitness tests______【64】national service with the socio-economic status of the men later in ______【65】. Those who were fit at 18 were more likely to go into higher education, and many secured more qualified jobs.
(51)
A．carefully
B．secretly
C．likely
D．happily
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