30．Frank’s marriage to the billionaire’s daughter got him through his hardest time, ________ years later he wondered what he could have done differently 。
A．therefore B．and C．however D．but
课前课后同步练习系列答案
课堂小作业系列答案
黄冈小状元口算速算练习册系列答案
成功训练计划系列答案
倍速训练法直通中考考点系列答案科目：高中英语 来源： 题型：阅读理解
It is natural that children are curious about the world around them. For example, they want to know how their hearts beat. They want to know why the ocean water tastes salty.
As children grow up, they become curious about different kinds of things. When they are babies, they are interested in the parts of their bodies and in the smiles of their mothers. They become interested in the physical world around them: the plants, the animals, the sky. Later, they become interested in the things that people have made: wheels, bicycles, cars. And when they are adults, their curiosity continues. Sometimes this curiosity leads to a career in science.
Scientists spend their lives trying to find out about the world. Those who work with the earth sciences study the earth, the oceans, and the sky. Other scientists who study living things work with the biological sciences. A third group of scientists study the physical sciences, e. g. physics, chemistry .
These scientists have already discovered a lot about our world. For example, they tell us why your heart beats fast when you run. They say that when you are quiet, your heart normally beats 65 or 75 times a minute. Your heart is a pump that pumps blood to all parts of the body. The blood carries oxygen and nutrition. When you run, your muscles work very hard and use the nutrition that the blood carries to them. The muscles need oxygen, too. So your brain sends a signal to the heart. The signal means that the muscles need more nutrition and oxygen. Then the heart beats fast and sends blood quickly to the muscles. It may beat 90 to 140 times a minute.
Of course, scientists cannot answer all of our questions. If we ask, “Why does the ocean water taste salty” scientists will say that the salt comes from rocks. When a rock gets very hot or very cold, it cracks. Rain falls into cracks. The rain then carries the salt into the earth and into the rivers. The rivers carry the salt into the ocean. But then we ask , “What happens to the salt in the ocean? The ocean does not get saltier every year.” Scientists are not sure about the answer to this question.
We know a lot about our world, but there are still many answers that we do not have, and we are curious.
According to the passage, which of the following statements is true?
A. People are curious in the same way.
B. People in different countries are interested in different things.
C. People of different ages are interested in different things.
D. Men and women are curious about different things.
Scientists who work with the biological sciences study____.
A. the earth , the oceans and the sky B. plants and animals
C. man-made things D. ocean water
A rock cracks _____.
A. in wet regions B. in dry regions
C. when salty water falls in D. at very high or very low temperatures
People are always curious because _____ .
A. they know little about the world B. they know nothing about the world
C. they can not explain many things D. they want to be scientists
查看答案和解析>>
科目：高中英语 来源： 题型：
短文改错：（共10小题；每小题1分，满分10分）
Have you ever heard Angel Falls? It is 81._________
the highest waterfall in the world, deep in 82._________
the jungles of Venezuela. Few has ever seen 83._________
Angel Falls. That is very hard to get there. 84._________
If you went on land, you would have to travel 85._________
for weeks across thick jungles. If you went 86._________
by plane, it would spend about four hours. No 87.????????????????????_________
one knew about this high waterfall since 1930. 88._________
In that year, James Angel, American pilot, 89._________
flew over the area. Suddenly he saw a waterfall,
that seemed to drop straight from the clouds. 90._________
查看答案和解析>>
科目：高中英语 来源： 题型：
—Can we get everything ready by the weekend?
—It all depends on _______ we can get Mr. Green’s co-operation.
A．that B．what C．whether D．if
查看答案和解析>>
科目：高中英语 来源： 题型：
They suspected that the secret had been________ by one of their colleagues．
A. given up B. given in C. given out D. given away
查看答案和解析>>
科目：高中英语 来源： 题型：
----- Why hasn’t she come to the party?
----- I’m afraid she can’t. She is _______ in preparing her graduation paper.
A. covered B. filled C. occupied D. crowded
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
The most important holiday in spring, especially for Christians（基督徒）, is Easter. This Christian holiday is not on the same date every year, but it’s always on a Sunday. It can be any Sunday between March 22 and April 25. Many people celebrate Easter by buying new clothes. Children celebrate by hunting for colored eggs that their parents have hidden around the house. People also give Easter baskets filled with candy and other goodies to one another to celebrate the day.
But the holiday is more than new clothes and good things to eat. On Easter, many people go to church to celebrate Jesus’ resurrection（复活）from the dead.
Most people color them. Some people hide them. Others just eat them. But no matter what one does with Easter eggs, they are an important Easter tradition throughout the Western world.
People from many different cultures celebrate Easter. In both America and Belgium, children look for Easter eggs hidden on lawns and in bushes. In America， children believe the eggs are hidden by the Easter bunny（复活节兔子）. But in Belgium, the hidden eggs are supposed to have fallen from church bells. In Bulgaria, red Easter eggs are lucky in churches; Bulgarian families also hit these Easter eggs together to see whose is the strongest. The winner looks forward to good fortune that year. Still dozens of other Easter traditions exist. In parts of Austria, for example, children sing from door to door and are rewarded with colorful eggs.
60. Easter comes _______.
A. on the same date every year
B. on Sunday on March 22
C. on Sunday on April 25
D. on a Sunday between March 22 and April 25
61. To celebrate Easter, people ___________.
A. go shopping, hide colored eggs and children hunt for them
B. give Easter baskets filled candy and goodies to one another
C. buy new clothes, hide colored eggs and children look for them around the house
D. both B and C
62. For Christians the more important thing to do on Easter is________.
A. buying new clothes
B. going to church to celebrate Jesus‘ resurrection
C. eating delicious food and paint color eggs
D. exchange beautiful gifts each other
63. People from different cultures have different ideas about Easter egg， _________.
A. In both American and Belgium, children hunt for Easter eggs hidden in rooms and in bushes
B. In American, children believe the eggs are hidden by the Easter bunny
C. In Belgium, the hidden eggs are thought to have fallen from doorbells
D. In America, the hidden eggs are supposed to have fallen from doorbells
查看答案和解析>>
科目：高中英语 来源： 题型：阅读理解
Although man has known asbestos for many hundreds of years, it was not until 160 years ago that it was mined for the first time on the North American continent. H. W. Johns, owner of a New York City Supply Shop for roofers, was responsible for(对…负责) the opening of that first mine.
Mr. Johns was given a piece of asbestos which had been found in Italy. He experimented with the material and then showed its surprising powers to his customers. After putting on a pair of asbestos gloves, which looked much like ordinary work gloves, he took red-hot coals from the fireplace and played with them in his hands. How astonished the customers were to discover that he was not burned at all. You can well imagine that he had increasing business in asbestos roofing materials. However, because it was very expensive to transport (carry) them from Italy to the United States, Mr. Johns sent out a young scientist to seek a source nearer home. This young man found great vein(岩脉), in the province of Quebec in Canada.
Ever since 1881 Quebec has led the world in the production of this unusual mineral, which is made up of magnesium, silicon, iron, and oxygen. When it is mined, the asbestos is heavy, just as you would expect a mineral to be. When it is separated, a strange thing happens; the rock breaks down into fine, soft, soapy fibres(纤维).
Scientists do not know why the rock can be separated easily into threads(线), but they have found thousands of uses of this fireproof material, of the so-called “cloth of stone”.
40. Which title best expresses the main idea of this passage?
A. Asbestos mined in Canada B. Fireproof matter
C. A “wonder” mineral D. A new roofing material
41. Johns proved his ability as a salesman by_______.
A. going into roofing business B. carrying asbestos from Italy
C. sending a trained scientist D. showing the use of asbestos gloves
42. Which is the most important character of asbestos that the author wants to show us?
A. It is like thread. B. It feels soapy. C. It burns easily. D. It is unusually heavy.
43. The author’s main purpose in writing this passage was to _______.
A. show the need for more scientists B. compare asbestos with other minerals
C. increase the sales of asbestos D. present facts about asbestos
查看答案和解析>>
科目：高中英语 来源： 题型：
. — You must obey every word of mine!
— _____ I don’t?
A. How if B. What if C. Even if D. Only if
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com
