Reading Comprehension(20 points)
Directions：There are 4 reading passages in this part．Each passage is followed by some questions or unfinished statements．For each of them there are four choices marked A，B，C and D．You should decide on the best choice and mark the corresponding letter on the Answer Sheet with o single line throught the center．


41、根据以下内容回答41-60题：
one of the advantages of being self-employed is that the profit the business makes belongs to the owner．If the self．employed person is successful in business，he or she has the chance to earn great deal of money and even become wealthy．The profit earned by a self-employed per-son is the reward for his or her effort，ability，and creativity．Thus，a second advantage of be-ing self-employed is that a person’s intelligence and abilities have a direct effect on his of her earnings．People who have outstanding abilities or intelligence often find they can earn far more through seif-employment than they can through working as an employee.A thIrd adVantage ot being self-employed is that a person can control both the number of hours worked and the hours of work．While not all self-employed people are completely free to choose whatever hours they want to work，most of them have more control OYer this area than do the people who for salanes or wages．
As with most things in life，being self-employed is not without problems.First，bemg one's own boss places the responsibility for success directly on that individual’s shoulders.Abjl-ities and intelligence will be put to the test．Everyone has some weaknesses and is less capable in some things than in others．These weaknesses will affect how successful a self-employed Per-son is．Second，though the self-employed can eaITl considerable profits with a successful busi-ness，losses can force them out of business and，in some instances，place them In debt.A third disadvantage concerns income security．Self-employed people have no guaranteed wage.Their earnings can vary greatly from year to year，depending Off business conditions．Salaried people，on the other hand，can generally count on continued earnings from year to year．In addition，salaried people often enjoy fringe benefits that mean greater peace of mind．Fringe benefits are all of the benefits provided for employees in addition to wages and salaries．One of these benefits may be insurance paid for by the employer that continues the employee’salary in the event of sickness or accident．Many self-employed people do not have such protection，un-less they put money aside themselves．
A self-employed person is one__________ ．
A．who can make a big profit
B．who is his or r／er own boss
C．whose business has a better chance to success
D．who employs no others but his or her relatives


42、One of the advantages serf-employment offers is that self-employed people__________ .
A．may decide when and how long they work
B．have outstanding abilities and intelligence
C．may get more business support from the government
D．are easy to earn money and ready to become wealthy


43、One problem of serf-employment is that__________ ．
A．there is no guarantee of income security
B．it is comparatively weak in management
C．an employer's earnings have nothing to do with business conditions
D．salaries may vary greatly from person to person


44、We may guess from the context that fringe benefits__________ ．
A．are all the money provided for employees
B．are benefits an employee receives apart from wages and salaries
C．consist of those that are paid by insurance companies
D．result from business activities the employer．has organized


45、The author's attitude towards self-employment is__________ ．
A．positive
B．negative
C．indifferent
D．objective

46、根据以下内容回答46-65题：
The first astronaut to walk in space，Leonov，and his companion，Belaiev，began making preparations for the walk as soon as their spaceship was launched．The spaceship was equipped with a double door，which was fitted with a bellows(风箱)between the ship and the outside．
This made it possible for the astronaut，in his space suit with oxygen supply，to go first from the air-filled ship to the bellows．Then the air was let out of the bellows，and while the man stepped outside，the air inside the ship remained at normal pressure．If the door had opened di-rectlV into space，the air in the ship would have rushed out and been lost when．the dooropened．
Leonov and Balaiev practiced testing the doors several times after they had begun moving around the earth．When the time came for Leonov to go out，his companion helped him attach the cable that was to keep him from floating away from the ship．Then Leonov entered the bel-lows，and the door closed behind him．When’there was no air left in the bellows，the outer door opened and Leonov could see the blackness of space and the blinding light of the sun．
If the sky appears blue to us on earth，it is because the earth’s atmosphere absorbs a cer-rain number of blue rays of sunlight．Out where there is no air，this phenomenon does not take place．On the earth，our atmosphere spreads light so that，when the sun is up，light seems to be everywhere．However，in the airless outer space，strong lights，such as the sun，exist side by side with a dark similar to the blackest night．The absence of air also explains why the stars do not seem to twinkle(闪烁)in space，as they do from the earth．
The spaceship was furnished with a bellows in order to__________ ．
A．keep air in the ship when its door was opened
B．prevent the spaceship from floating in space
C．make it possible for the astronauts to walk in space
D．provide the astronauts with air under normal pressure


47、Immediately before going out of the spaceship，the astronauts have to__________ ．
A．check the spaceship doors
B．walk through the bellows
C．attach each other with a cable
D．do some warm．up exercises


48、When he stepped out of the spaceship，Leonov saw__________ ．
A．black space without light
B．the sun first and then darkness
C．darkness turning into blinding light
D．darkness and light at the same time


49、During the day people can see light everywhere，because when the sun is up__________ ．
A．it gives off light
B．it absorbs light
C．the earth’s atmosphere gives off light
D．the earth’s atmosphere absorbs sunlight


50、In outer space，the absence of air is responsible for__________ ．
A．the brightness of space
B．the brightness of stars
C．the coexistence of stars and stronger lights
D．the coexistence of brightness and darkness