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更多“Why use wood when you can use …”相关的问题
Which of the following is NOT a reason why people look after their relatives？
A．They feel they are of use to other people.
B．They want to set an example to their children.
C．They think it is their duty to help their relatives.
D．They hope they deserve care when they need it.
完成下列各题 The people who lives in the far North are called Eskimos(爱斯基摩人)．In the world of ice and snow it is 21 to grow plants for food．The Eskimos must hunt and fish during the whole year to 22 themselves and their families with food．In winter，they hunt the seal(海豹) 23 the polar(极地的)bear．When they hunt the seal，they 24 a hole in the ice and try to 25 the seal when it comes up to breathe． In summer，the Eskimos hunt 26 animals。and they also hunt birds and catch fish． 27 that is useful is saved．The Eskimos use the meat from animals for food．They melt(融化)the fat from their bodies and use the 28 as fuel(燃料)．They make tools out of animals bones．The skin and furs of animals are used for making clothing． If an Eskimo is 29 lucky，he may kill a whale(鲸鱼)， 30 a dead whale may wash up on the shore near his house．The whale is an especially useful animal，because it gives a great 31 of oil． There is 32 wood at all where the Eskimos live．Eskimos 33 all their wood from the sea．Sometimes floating wood from places．farther south washes up on the shore． Most Eskimo houses are 34 of stones．Instead of a door，there is a long，low tunnel (地道) 35 into the house．People have to crawl(爬)through the tunnel in order to enter the house．
A.important
B.impossible
C.impolite
D.interesting
Are you superstitious？ No, of course not. Do you believe in magic (魔法), and luck charms (护身符), and elves or gremlins (小精灵) ？ Certainly not, but if I should greet you with the usual How's business？" You'll answer "Oh, just so-so" although your business is profiting greatly. When you are successful in some venture you might say you were just lucky. And yet, you know it was probably due to your a bility and hard work. Why？ Sometimes you knock on wood because wood was once a tree and there is a primitive belief that protective gods inhabit trees and knocking on wood attracts their attention so they may be credited with your successes.
If I should sneeze, only the strongest of you could refrain(克制而不) from saying "God bless you". Why bless this unsanitary (不讲究卫生的) habit？ Our ancestors believed that a sneeze opened the body to invasion by devils, and invoking (召唤) the name of God made the devils get out in a hurry. You may not realize it, but you express this same "devil invasion" when you say, "Whatever can have gotten into that child？" or "I wonder what possessed me to do that？"
Although they may no longer be believed, evidences of superstitions that have had their origins in the primitive fear of the unknown still exist in modern language and gestures.
The author ______.
A．believe that most people are superstitious
B．believe that very few people are superstitious
C．believes that there are still some evidences of superstitions in what we say and what we do
D．is superstitious
Archimedes is most well-known for one specific idea that he came up with. "Archimede's Principle" states that a solid object which is immersed in a liquid is pushed up by a force which is equal to the weight of the water that the object moves. For example, if you put a piece of wood and a piece of gold the same size in water, only the wood will float. Both the wood and gold move the same amount of water, but the wood weighs less than this water, while the gold weighs more.
It is believed that Archimedes discovered this principle when the king of Syracuse asked him to solve a problem. The king wanted to know if his crown was pure gold or a mixture of gold and silver. The king, of course, did not melt his crown to find out. The idea came to Archimedes as he lowered himself into his bath. He noticed how the water spilled out of the tub. He decided to use the same idea for the crown. He knew that a gold crown immersed in water would weigh more than one made of silver. The experiment was done and the goldsmith was proved guilty of trying to cheat the king.
A good title for the selection is ______.
A．Archimedes
B．Archimedes' Principle
C．A gold and silver crown
D．The king of Syracuse
？？The people who lives in the far North are called Eskimos(爱斯基摩人).In the world of ice and snow it is（1）to grow plants for food.The Eskimos must hunt and fish during the whole year to（2）themselves and their families with food.In winter，they hunt the seal(海豹)（3）the polar(极地的)bear.When they hunt the seal,they（4）a hole in the ice and try to（5）the seal when it comes up to breathe.？？
？？In summer,the Eskimos hunt（6）animals.and they also hunt birds and catch fish.（7）that is useful is save D.The Eskimos use the meat from animals for food.They melt(融化)the fat from their bodies and use the（8）as fuel(燃料).They make tools out of animals bones.The skin and furs of animals are used for making clothing.？？
？？If an Eskimo is（9）lucky,he may kill a whale(鲸鱼),（10）a dead whale may wash up on the shore near his house.The whale is an especially useful animal,because it gives a great（11）of oil.？？
？？There is（12）wood at all where the Eskimos live.Eskimos（13）all their wood from the sea. Sometimes floating wood from places.farther south washes up on the shore.？？
？？Most Eskimo houses are（14）of stones.Instead of a door，there is a long，low tunnel (地道)（15）into the house.People have to crawl(爬)through the tunnel in order to enter the house.？？
A.important
B.impossible
C.impolite
D.interesting
()A.another
B.other
C.others
D.new
()A.Something
B.Everything
C.Anything
D.Nothing
()A.fat
B.1iquid
C.oil
D.rest
()A.supply
B.find
C.look for
D.give
()A.or
B.and
C.but
D.with
()A.much
B.often
C.not
D.very
()A.not
B.no
C.none
D.1ittle
()A.find
B.have
C.receive
D.get
()A.built
B.constructed
C.made
D.piled
()A.going
B.coming
C.1eading
D.winding
()A.many
B.much
C.number
D.deal
()A.find
B.cut
C.beat
D.strike
()A.kill
B.beat
C.hold
D.catch
()A.and
B.or
C.otherwise
D.but
请帮忙给出每个问题的正确答案和分析，谢谢！
Not long age, experiments showed that birds rely on the sun to guide them during daylight hours. But what about birds that fly by night？ Tests with artificial stars have proved that certain night - flying birds are able to follow the stars in their long - distance flights.
A dove (鸽子) had spent its lifetime in a cage and had never flown under a natural sky. Yet it showed an inborn ability to use the stars for guidance. The bird's cage was placed under an artificial star - filled sky. (76) The bird tried to fly in the same direction as that taken by his outdoor cousins. Any change in the position of the artificial stars caused a change in the direction of his flight.
(77) But the stars are apparently their principal means of navigation (航行) only. When the stars are hidden by clouds, they seemingly find their way by such landmarks as mountain ranges, coast lines, and river courses. But when it's too dark to see these, the doves circle helplessly, unable to find their way.
The reason why birds don't get lost on long flights ______.
A．have been known to scientists for many years
B．have only recently been discovered
C．are known by us
D．will probably remain a mystery
People don't use their middle names very much. So" John Henry Brown" is usually called "John Brown". People never use Mr.; Mrs. or Miss before their first names. So you can say John Brown, or Mr. Brown; but you should never say Mr. John. They use Mr. , Mrs. or Miss with the family name but never with the first name.
Sometimes people ask me about my name. "When were you born, why did your parents call you Jim？" they ask. "Why did they choose that name？ The answer is they didn't call me Jim. They called me James. James was the name of my grandfather'. In England, people usually call me Jim for short. That's because it is shorter and easier than James.
Most English people have ______ name(s).
A．one
B．two
C．three
D．four
1)、A.but
B.how
C.from
D.whether
E.average
2)、A.but
B.how
C.from
D.whether
E.average
3)、A.but
B.how
C.from
D.whether
E.average
4)、A.but
B.how
C.from
D.whether
E.average
5)、A.but
B.how
C.from
D.whether
E.average
We 【B5】______ our children to 【B6】______ them for the time 【B7】______ they will be big and will have work 【B8】______ themselves. Nearly all they study at school has some 【B9】______ use in their life. But is that the only reason 【B10】______ they do to school？
There is 【B11】______ in education then we have just learning facts. We go to school 【B12】______ all to lean how to learn 【B13】______ when we have 【B14】______ school we can continue to learn. A man who really knows 【B15】______ will always be successful. Because 【B16】______ he has to do something new which he has never had to do 【B17】______ , he does it in the best 【B18】______ . The uneducated person 【B19】______ , is probably unable to do something new, or does it badly. The purpose of schools, therefore, is not just to teach languages 【B20】______ to teach pupils the way to learn.
A．either
B．whether
C．ever
D．as well
A.to take place
B.to take over
C.take the place of
D.in place of
More than 60 people died in this earthquake. By comparison, an earthquake of similar intensity that shook America in 1988 claimed 25,000 victims.
Injuries and deaths were relatively less in Los Angeles because the quake occurred at 4:31 a.m. on a holiday, when traffic was light on the city's highways. In addition, changes made to the construction codes in Los Angeles during the last 20 years have strengthened the city's buildings and highways, making them more resistant to quakes.
Despite the good news, civil engineers aren't resting on their successes. Pinned to their drawing boards are blueprints for improved quake-resistant buildings. The new designs should offer even greater security to cities where earthquakes often take place.
In the past, making structures quake-resistant meant firm yet flexible materials, such as steel and wood, that bend without breaking. Later, people tried to lift a building off its foundation, and insert rubber and steel between the building and its foundation to reduce the impact of ground vibrations. The most recent designs give buildings brains as well as concrete and steel supports. Called smart buildings, the structures respond like living organisms to an earthquake's vibration. When the ground shakes and the building tips forward, the computer would force the building to shift in the opposite direction.
The new smart structures could be very expensive to build. However, they would save many lives and would be less likely to be damaged during earthquakes.
One reason why the loss of lives in the Los Angeles earthquake was comparatively low is that ______.
A．new computers had been installed in the buildings
B．it occurred in the residential areas rather than on the highways
C．large numbers of Los Angeles residents had gone for a holiday
D．improvements had been made in the construction of buildings and highways
