Of all the problems facing modern
astronomers, perhaps the most fascinating one is "can intelligent life exist
elsewhere" Since the earth is a unimportant planet moving round an unimportant
star, it would be a pride on our part to suppose that we are the only
intelligent beings in the universe. But to obtain proof is difficult.
The main trouble is that our neighbor worlds, the bodies in the Solar
System appear to be unsuitable for advanced life forms. The Moon may be ruled
out at once; it has hardly any atmosphere. Venus is little better; the surface
temperature is extremely high and the atmosphere is mostly carbon dioxide. Mars
with a very thin atmosphere and a severe shortage of water, may well support
simple that life seems no hope of finding animals, while the alternative
Martians of the story-tellers have since been given
A. angry when the government paid little attention to his ideas
B. pleased when the government did take notice of his plan
C. surprised that the official were interested in his suggestion
D. disappointed at the lack of interest shown in his plan
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[单项选择] Passage Four
Of all the problems facing modern
astronomers, perhaps the most fascinating one is "can intelligent life exist
elsewhere" Since the earth is a unimportant planet moving round an unimportant
star, it would be a pride on our part to suppose that we are the only
intelligent beings in the universe. But to obtain proof is difficult.
The main trouble is that our neighbor worlds, the bodies in the Solar
System appear to be unsuitable for advanced life forms. The Moon may be ruled
out at once; it has hardly any atmosphere. Venus is little better; the surface
temperature is extremely high and the atmosphere is mostly carbon dioxide. Mars
with a very thin atmosphere and a severe shortage of water, may well support
simple that life seems no hope of finding animals, while the alternative
Martians of the story-tellers have since been given
A. there may be other intelligent beings in the universe
B. there are other intelligent beings in the universe
C. people living on the earth are almost certainly the only intelligent beings in the universe
D. people living on the earth are definitely the only intelligent beings in the universe
[单项选择]Passage Four
We all know that people sometimes change their behavior when someone is looking their way. Now, a new study reported online on April 2nd in Current Biology shows that jackdaws —birds related to crows with eyes that appear similar to human eyes — can do the same.
“Jackdaws seem to recognize the eye’s role in visual perception, or at the very least they are extremely sensitive to the way that human eyes are oriented,” said Auguste von Bayern, formerly of the University of Cambridge and now at the University of Oxford.
When presented with a preferred food, hand-raised jackdaws took significantly longer to retrieve the reward when a person was directing his eyes towards the food than when he was looking away, according to the research team led by Nathan Emery of the University of Cambridge. The birds hesitated only when the person in question was unfamiliar and thus potentially threatening.
In addition, the birds were able to interpret human communicative g
A. When the feeder is looking away from the food.
B. When the feeder is unfamiliar to the bird.
C. When the. feeder holds the food in his hand.
D. When the feeder is looking at the food.
[单项选择]Passage Four
The biggest danger facing the global airline industry is not the effects of terrorism, war, SARS and economic downturn. ①It is that these blows, which have helped ground three national flag carriers and force two American airlines into Chapter 11 bankruptcy, will divert attention from the inherent weaknesses of aviation, which they have exaeerbated(恶化). As in the crisis that attended the first Gulf War, many airlines hope that traffic will soon bounce back, and a few catastrophic years will be followed by fuller planes, happier passengers and a return to profitability. Yet the industry’s problems are deeper and older than the trauma of the past two years implies.
As the centenary of the first powered flight approaches in December, the industry it launched is still remarkably primitive. The car industry, created not long after the Wright Brothers made history, is now a global industry dominated by a dozen firms, at least half of which make goo
A. are the effects of various disasters
B. are actually not fully recognized
C. are attracting a lot of attention
D. are not the real cause of airlines’ bankruptcy
[单项选择] Passage Four
Design of all the new tools and
implements is based on careful experiments with electronic instruments. First, a
human "guinea pig" is tested using a regular tool. Measurements are taken of the
amount Of work done, and the buildup of heat in the body. Twisted joints and
stretched muscles can not perform as well, it has been found, as joints and
muscles in their normal positions. The same person is then tested again, using a
tool designed according to the suggestions made by Dr. Tichauer. All these tests
have shown the great improvement of the new designs over the old.
One of the electronic instruments used by Dr. Tichauer, the myograph
(肌动记器), makes visible through electrical signals the work done by human
muscle.
Another machine measures any dangerous features of
tools, thus proving information upon which to base a new des
A. they are twisted and stretched
B. they are in their normal positions
C. they are tested with a human "guinea pig"
D. they are tested with electronic instruments
[单项选择] Passage Four
It is all very well to blame traffic
jams, the cost of petrol and the quick peace of modern life, but manners on the
roads are becoming horrible. You might tolerate the rude and inconsiderate
driver, but nowadays the well-mannered motorist is the exception to the rule.
Perhaps the situation calls for a "Be Kind to Other Drivers" campaign,
otherwise, it may get completely out of hand.
Road politeness is
not only good manners, but good sense, too. It takes the most cool-headed and
good-tempered of drivers to resist the temptation to revenge when subjected to
uncivilized behaviors. On the other hand, a little politeness goes a long way
towards relieving the tensions of motoring. A friendly nod or a wave of
acknowledgement in response to an act of politeness helps to create an
atmosphere of goodwill and tolerance, so necessary in m
A. Drivers should be ready to yield to one another
B. road users should make more sacrifices
C. drivers should have more communication among themselves
D. drivers will suffer a great loss if they pay no respect to others
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