题目内容

—The experiment is of particular importance.

    —I see. We will carry on with it ________ we can get enough money.

  A. unless    B. though    C. whether    D. until

C 


解析:

whether引导名词性从句时,意为“是否”。若其引导状语从句,意为“不论是否……”。

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IS THERE LIFE ON EARTH?

There was great excitement on the planet of Venus(金星) this week. For the first time Venusian scientists managed to land a satellite on the planet Earth, and it has been sending back signals as well as photographs ever since.?

The satellite was directed into an area known as Manhattan (named after the great Venusian astronomer Prof. Manhattan, who first discovered it with his telescope 20 000 light years ago).Because of excellent weather conditions and extremely strong signals, Venusian scientists were able to get valuable information as to feasibility(可行性) of a manned flying saucer(飞碟) landing on Earth.A press conference was held at the Venus Institute of Technology.?

“We have come to the conclusion,based on last week's satellite landing,” Pro. Zog said,“that there is no life on the Earth.”?

“How do you know this?” the science reporter of the Venus Evening Star asked. ?

“For one thing, Earth's surface in the area of Manhattan is composed of solid concrete(混凝土)and nothing can grow there. For another, the atmosphere is filled with carbon monoxide(一氧化碳) and other deadly gases and nobody could possibly breathe this air and survive.”?

“What does this mean as far as our flying saucer program is concerned?”?

“We shall have to take our own oxygen with us, which means a much heavier flying saucer than we originally planned. ”

“Are there any other hazards that you discovered in your studies?”?

“Take a look at this photo. You see this dark cloud floating over the surface of Earth? We call this the Consolidated Edison Belt. We don't know what it is made of, but it could give us a lot of trouble and we shall have to make further tests before we send a Venus Being there.”?

“If what you say is true, won't this set back the flying saucer program several years?”?

“Yes, but we shall proceed as soon as the Grubstart gives us the added funds.”?

“Prof. Zog, why are we spending billions and billions of zilches to land a flying saucer on Earth when there is no life there?”?

“Because if we Venusians can learn to breathe in an Earth atmosphere, then we can live anywhere.”

During the week of great excitement the Venusian scientists succeeded in getting important information on whether they can_______.

A. land a satellite with Venus astronauts on Earth

B. make a first?rate flying saucer?

C. get a Earth Being to Venus

D. direct a flying saucer into Manhattan?

According to Prof.Zog,the Venusians will have to take their own oxygen with them when they carry out their flying saucer program because_______.?

A. they need it on their way to the planet of Earth?

B. the Earth's atmosphere is filled with deadly gases?

C. oxygen is far from enough in the area of Manhattan where the saucer is to land?

D. there is no air on the planet of Earth?

The “dark black cloud” on the photograph refers to_______.?

A. the polluted air floating over the surface of Earth?

B. the mass of tiny drops of water floating above Earth?

C. the things that are unknown to everybody?

D. the dark clouds gathering before a storm breaks?

The author wishes to call our attention to the fact_______.?

A. that modern man has polluted his environment to such an extent that he might destroy himself if he went on like this?

B. that there is no point in spending billions and billions of zilches to land a flying saucer on Earth?

C. that pollution has become so serious a problem on Earth that even Venusians find life there unbearable?

D. that it is difficult, if not altogether impossible, to land a manned flying saucer on Earth

Over the last 70 years,researchers have been studying happy and unhappy people and finally found out ten factors that make a difference.Our feelings of well-being at any moment are determined to a certain degree by genes.However,of all the factors,wealth and age are the top two.

Money can buy a degree of happiness.But once you can afford to feed,clothe and house yourself,each extra dollar makes less and less difference.

Researchers find that,on average,wealthier people are happier.But the link between money and happiness is complex.In the past half-century,average income has sharply increased in developed countries,yet happiness levels have remained almost the same.Once your basic needs are met,money only seems to increase happiness if you have more than your friends,neighbors and colleagues.

“Dollars buy status,and status makes people feel better,”conclude some experts,which helps explain why people who can seek status in other ways—scientists or actors,for example—may happily accept relatively poorly-paid jobs.

In a research,Professor Alex Michalos found that the people whose desires—not just for money,but for friends,family,job,health—rose furthest beyond what they already had,tended to be less happy than those who felt a smaller gap(差距).Indeed,the size of the gap predicted happiness about five times better than income alone.“The gap measures just blow away the only measures of income,”says Michalos.

Another factor that has to do with happiness is age.Old age may not be so bad.“Given all the problems of aging,how could the elderly be more satisfied?”asks Professor Laura Carstensen.

In one survey,Carstensen interviewed 184 people between the ages of 18 and 94,and asked them to fill out an emotions questionaire.She found that old people reported positive emotions just as often as young people,but negative emotions much less often.

Why are old people happier?Some scientists suggest older people may expect life to be harder and learn to live with it,or they’re more realistic about their goals,only setting ones that they know they can achieve.But Carstensen thinks that with time running out,older people have learned to focus on things that make them happy and let go of those that don’t.

“People realize not only what they have,but also that what they have cannot last forever,”she says.“A goodbye kiss to a husband or wife at the age of 85,for example,may bring far more complex emotional responses than a similar kiss to a boy or girl friend at the age of 20.”

According to the passage,the feeling of happiness ______.

A.is determined partly by genes

B.increases gradually with age

C.has little to do with wealth

D.is measured by desires

Some actors would like to accept poorly-paid jobs because the jobs ______.

A.make them feel much better

B.provide chances to make friends

C.improve their social position

D.satisfy their professional interests

Aged people are more likely to feel happy because they are more ______.

A.optimistic

B.successful

C.practical

D.emotional

Professor Alex Michalos found that people feel less happy if ______.

A.the gap between reality and desire is bigger

B.they have a stronger desire for friendship

C.their income is below their expectation

D.the hope for good health is greater

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