题目内容
（请给出正确答案）
The two scientists were quarrelling at the beginning of the story, because ______.
A．the Japanese watch was better
B．the German watch was better
C．each of them thought his own watch was better than the other's
D．both the watches were wrong
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更多“The two scientists were quarre…”相关的问题
At least how many tests were carried out by the scientists referred to in this passage？ A. Three B. Two C. Only one D. No one knows
Cleaners and farmers do ______scientists do.
A. the same work as
B. less important work than
C. more work than
D. as important work as
Scientists will have to___new approaches of increasing the world’s power supply.
A.put up with
B.catch up with
C.stand up for
D.come up with
根据以下内容回答题：
Scientists know that there are two basic approaches to prolonging life（延长寿命），one approache is the elimination of the diseases that generally affect older people—diseases such as cancer，heart attack and stroke．（1）is the delay of the process of growing-old the（2）of the body． In recent years scientific researchers（3）much time in the study of the process of aging．They believe that，within a few years，they will develop the knowledge and the（4）to delay the aging process for lo to 15 years．The result will be that more people will live longer，more healthful lives．At present，scientists believe that with the right diet，exercise，medical（5），and mental attitude many people can live to he l00 years old． Gerontologists（老年学专家），people who（6）studies of the problems of growing old，are investigating（7）body cells slow down and（8）die．They feel that delaying this slowing down process（9）help postpone death．In a number of American universities，scien-tists are studying the activity of cells，the effects of diet and internal body temperature on aging．If their studies are successful，the results should help（10）the quality of life for older people in the next few years，as well as increase the life span of the next generation．
1.
A.Others
B.Another
C.The other
D.One more
Most people ______.
A．are left-handed
B．are right-handed
C．can use both hands equally well
D．never use left hands
A: Will that be OK？
B: How much are the tickets？
C: Two second-class is fine, thank you.
D: May I help you？
E: Have a nice trip
W: Good morning. 26____________
M: Hi, we&39;d like two tickets to Fuzhou, please.
W: Fuzhou. Certainly. Travelling today？
M: Yes. W: The next train is at 12: 00. 27___________
M: I’ll take the 12: 00 tickets.
W: Single or return？
M: Two singles. 28___________
W:First-class is 100 yuan and second-class is 80 yuan.
M: 29___________
W: that&39;s 160 yuan, please.
M: Here’s the money
W: And here are your tickets. 30___________
26、__________
27_________
28_________
29_________
30_________
请帮忙给出每个问题的正确答案和分析，谢谢！
One of the most interesting new uses for glass is in telephone communication. Scientists have developed glass fibers as thin as human hair, which are designed to can-y light signals. When the light reaches the other end, it is first changed into electrical signals, which are in turn converted into sound messages.
Called light wave communication, the new system was used successfully in an experiment in Chicago in 1997. During the experiment, two glass fibers were able to carry 672 conversations at the same time. The lightwave cable, containing 144 glass fibers, has the capacity to carry 50,000 conversations at the same time.
The lightwave communication system has two important advantages. First, the glass fiber cables are smaller and weigh less than copper. Second, they cost less.
Perhaps it can be said that telephone communication has entered the age of light.
One of the extraordinary qualities of glass is that it can carry ______.
A．sound signals
B．light signals
C．electrical signals
D．any signals
In 1934 the scientist William Beebe dived 3 , 000 feet below the surface in a hollow steel ball. In 1935 Auguste Piccard dived 10, 330 feet. In 1960 his son Jean dived to a【35】of 35, 800 feet.
All these early dives were deep. But the divers could not stay down for very long. They had to【36】the surface after a few seconds. Scientists needed to stay down longer to study life below the surface.【37】, they succeeded. Cousteau, a Frenchman, was able to【38】down to a depth of【36】feet for one month and to a depth of 90 feet for a week.
Now scientists are developing even【39】equipment. With this new equipment, men can stay【40】the surface for days or【41】weeks. In 1962 Consteau【42】a research station 35 feet below the surface. Then in 1964 he set up another station on the ocean floor of the Red Sea. This was the first undersea station to operate【43】help from the surface.
Many countries are now studying undersea【44】. The Soviet Union has an undersea laboratory in the Crimean Sea. The United States has a laboratory 50 feet【45】on the ocean floor【46】the Virgin Islands. In 1970 five men lived there for two weeks. Then a【47】of five women scientists stayed in the laboratory.【48】came other teams of men. All were there to explore the ocean depths and【49】plans for the use of its resources. Scientists hope to find enough【50】, vegetable, and animal wealth there to provide food for the whole world.
(31)
A．in
B．to
C．on
D．under
阅读下列短文，然后根据短文的内容从 55～57 小题的四个选择项中选出最佳的一项。
B
Scientists have searched for many years for a method to tell whether a volcano（火山）explosion will be small or large. Now，four scientists say they have discovered something in lava（熔岩）that will help do this. They did the research on Mount Unzen on the southern Japanese island of Kyushu.
Mount Unzen exploded in November，1990. Since then，more explosions have killed 43 people and destroyed the homes of more than 2，000 others. The volcano is still active today.
The scientists say the lava of the volcano contains high level of an element（成份），which is a sign of the presence of the lava from deep in the earth，not from the surface. They say it shows that the lava coming directly from inside the earth is connected with huge explosions instead of smaller ones.
The scientists examined the lava from 18 explosions of Mount Unzen that took place during many thousands of years. They also studied the lava from other volcanoes in the area that are older than Mount Unzen. The lava studied came from both large and small explosions. The scientists found that large explosions contained more of the element than small ones. The scientists say if they had known this two years earlier，they could have warned the people living in the area near Mount Unzen and saved many lives.
第 55 题 From the passage we learn that Mount Unzen is the name of ______.
A．a huge volcano explosion
B．a Japanese island
C．an active volcano
D．a kind of lava
Recently, some scientists decided to find out what the funniest joke in the world was. This wasclearly a (an) 21 task,as no two people ever really agree about what is funny and what is not--22 when they are from different 23 Telling jokes is something people often 24 around the worlD@25 , jokes are sometimes not funny to or are often not 26 by people who are not part of that culture(文化). Anyhow, 27 a year-long serious study, the scientists 28 the funniest joke in the world :Two hunters (猎人) are out in the woods. One of them 29 to the ground He doesn&39; t seemto be 30 , his eyes closeD@The other hunter takes out his phone and calls emergency (紧急)services."My friend is dead!"he 31 to the man on the other side."What can I do？"The man,in a(an) 32 voice,says," Dont&39; t worry. I can 33 . First, make sure he&39;s 34 "There is a silence,then a shot is 35 Bang! The hunter&39;s voice comes back on the line. He says,"OK,now what？"
请选择最佳选项()。
A.wonderfu
B.important
C.interesting
D.Difficult
请选择最佳选项()。A.especially
B.finally
C.gradually
D.Generally
请选择最佳选项()。A.companies
B.countries
C.families
D.Schools
请选择最佳选项()。A.ask
B.do
C.give
D.Play
请选择最佳选项()。A.Thus
B.Therefore
C.However
D.Anyhow
请选择最佳选项()。
A.guessed
B.held
C.proved
D.Understood
请选择最佳选项()。
A.A.for
B.B.during
C.C.before
D.D.After
请选择最佳选项()。A.wrote
B.touched
C.decided
D.Spread
请选择最佳选项()。A.jumps
B.falls
C.points
D.Gets
请选择最佳选项()。A.thinking
B.speaking
C.rising
D.Breathing
请选择最佳选项()。A.cries
B.nods
C.turns
D.Waves
请选择最佳选项()。A.anxious
B.angry
C.calm
D.Curious
请选择最佳选项()。A.help
B.feel
C.go
D.Show
请选择最佳选项()。A.buried
B.dead
C.hit
D.Sick
请选择最佳选项()。A.heard
B.made
C.taken
D.Told
Night of the Living Ants
When an ant dies，other ants move the dead insect out of the nest．This behavior. is interesting to scientists，who wonder how ants know for sure-and so soon-that another ant is dead．
Dong-Hwan Choe，a scientist at the University of California，found that Argentine ants have a chemical on the outside of their bodies that signals to other ants，“I’m dead-take me away．”
But there's a twist to Choe's discovery．Choe says that the living ants-not just the dead ones -have this death chemical．In other words，while an ant crawls around，perhaps in a picnic or home，it's telling other ants that it's dead．
What keeps ants from hauling away the living dead？Choe found that Argentine ants have two additional chemicals on their bodies，and these tell nearby ants something like，“Wait-I'm not dead yet．” So Choe's research turned up two sets of chemical signals in ants：one says，“I'm dead，”the other set says，“I'm not dead yet．”
Other scientists have tried to figure out how ants know when another ant is dead．If an ant is knocked unconscious，other ants leave it alone until it wakes up．That means ants know that unmoving ants can still be alive．
Choe suspects that when an Argentine ant dies．the chemical that says“Wait-I'm not dead yet” quickly goes away．Once that chemical is gone，only the one that says“I'm dead”is left．“It's because the dead ant no longer smells like a living ant that it gets carried to the graveyard(墓地)，not because its body releases new，unique chemicals after death，”said Choe．When other ants detect the“dead”chemical without the“not dead yet”chemical，they haul away the body．This was Choe's hypothesis(假设)．
To test his hypothesis，Choe and his team put different chemicals on Argentine ant pupae(蛹)． When the scientists used the“I'm dead”chemical，other ants quickly hauled the treated pupae away． When the scientists used the“Wait-I'm not dead yet”chemical，other ants left the treated pupae alone． Choe believes this behavior. shows that the“not dead yet”chemical overrides(优胜于)the“dead”chemical when picked up by adult ants．And that when an ant dies，the“not dead yet”chemical fades away． Other nearby ants then detect the remaining“dead”chemical and remove the body from the nest．
The phrase“this death chemical”in paragraph 3 refers to
A．the chemical that contains poison．
B．the chemical that announces death．
C．the chemical that prevents death．
D．the chemical that causes death．
