_____the beginning of the 19th century did scientists know that all matter is made up of atoms.
A,At B,By C,Up to D,Not until
高二英语单项填空中等难度题
.______ the beginning of the 19th century did scientists know that all matter is made up of atoms.
A. At B. By C. Up to D. Not until
高二英语单项填空简单题查看答案及解析
_____the beginning of the 19th century did scientists know that all matter is made up of atoms.
A,At B,By C,Up to D,Not until
高二英语单项填空中等难度题查看答案及解析
Not until the early years of the 19th century ________ what heat was.
| A．man did know | B．did man knew |
| C．didn't man know | D．did man know |
高二英语单项填空中等难度题查看答案及解析
Not until the early years of the 19th century ________ what heat was.
A. man did know B. did man knew C. didn't man know D. did man know
高二英语单项填空中等难度题查看答案及解析
During the 19th century, scientists found that when certain parts of the brain of a person were hurt, he would lose the power of doing certain things. And so people thought that each part of the brain does a different job. But modern research has discovered that this is not so, for it is not easy to show exactly what each part of the brain does.
In the past fifty years there has been a great increase in the amount or research done on the brain. Scientists have found out that the way the brain works is not so simple as people in general may think. Chemists tell us that about 100,000 chemical changes take place in the brain every second. Some recent researches also suggest that we can remember everything that happened to us. We may not be able to think of the things we have heard and seen but it is kept there in the store-house of the human mind. Earlier scientists thought that the power of one’s brain got weaker and weaker as one grows older. But it is plenty of exercise, it keeps its power. It is now thought that is not true. As long as the brain is given plenty of exercise, it keeps its power. It has proved that an old person who has always been active in the mind has a quicker mind than a young person who has done physical work without using much of his brain.
1.In the last century, scientists found that a person would lose the power to do certain things _____.
A．when he got weaker in health
B．if certain parts of his brain were hurt
C．after he did a quite different job
D．when he grew older
2.Scientists today are still unable to show exactly ______.
A．what each part of the brain is doing
B．how many chemical changes take place in the brain each second
C．whether each part of the brain does the same job
D．which part of the brain is the most important
3.It has been found that one’s brain usually works ______.
A．faster when he is old
B．a little now and a little then
C．in a very simple way
D．without any rest all day long
4.Which of the following is NOT true according to the text?
A．Scientists are working hard at the researches on the brain.
B．As many as six million chemical changes take place in the brain every minute.
C．A young man doing physical labor is sure to have a much slower mind.
D．Even an old man has a quick mind only if his brain is given much exercise.
5.The more work we give our brains,___________.
A．the less result we will gain
B．the more work they are able to do
C．the weaker their power will get
D．the more tired they will feel
高二英语阅读理解中等难度题查看答案及解析
American English began in the 17th century. At the beginning of the 17th century, the English language was brought to North America by colonists (殖民者) from England. They used the language spoken in England, that is, Elizabethan English, the language used by Shakespeare.
In order to exploit (开发) new resources in America, British colonists settled down there and from 1607 to 1732 set up thirteen colonies. In these thirteen areas, English was a common language used by all people. They continued to speak as they had done in England.
As time went by, the English language gradually changed on both sides of the Atlantic Ocean. Foreigners longing for wealth set foot on the coastal area to trade. The Americans adopted many words from foreign languages and invented lots of new words to meet their commercial (贸易的) needs.
Following American Independence, famous people like Thomas Jefferson, the president, began to consider that the country should have a language of its own. Noah Webster compiled (编纂) three elementary books on English. Later, he expressed the idea that as an independent nation, America should have a system of its own in language as well as in government. After the second half of the 19th century, many great writers such as Mark Twain helped the development of American English.
English in America has developed a character of its own, showing the life and the physical and social environment of the American people. Since the rise of the United States to a position of world importance, American English has been developing and changing. There is no doubt that American English will enrich the English language greatly. With the rapid development of modern mass media and the common needs of economic, cultural and political exchanges, American English will be more widely used in the world than British English.
1.What can we infer from paragraph 3?
A. People from the seaside were more willing to learn English.
B. The English language changed as a result of inner culture shock.
C. New words occurred in American English as a result of local invention.
D. International business contributed to the development of American English.
2.What do we know about American English according to the passage?
A. It came into being at the end of the 17th century.
B. It hardly makes contributions to the development of English.
C. Its development has a close relationship with American people’s life.
D. It has been more widely used than British English from the beginning.
3.What’s the best title for the passage?
A. The Difference between American English and British English.
B. The development of American English.
C. The Birth of American English.
D. Language and Business.
高二英语阅读理解中等难度题查看答案及解析
At the beginning of this century, medical scientists made an interesting discovery: we are built not just of flesh(肌肉) and blood but also of time. They were 21 to show that we all have a ‘body clock’ 22 us, which controls the 23 and fall of our body energies, 24 us different from one day to the next.
The 25 of a ‘body clock’ should not be too 26 since the lives of most living things are controlled 27 the 24-hour night-and-day cycle(循环). We feel 28 and fall asleep at night and become 29 and energetic during the day. If the 24-hour cycle is 30 most people experience unpleasant 31 . For example, people who are not 32 to working at night can find that 33 of sleep causes them to 34 badly at work.
35 the daily cycle of sleeping and 36 , we also have other cycles which 37 longer than one day. Most of us would 38 that we feel good on some days and not so good on 39 ; sometimes our ideas seem to flow and at other times, they 40 do not exist.
1.
A. anxious B. careful C. able D. proud
2.
A. around B. inside C. between D. on
3.
A. rise B. supply C. use D. movement
4.
A. showing B. treating C. changing D. making
5.
A. idea B. opinion C. story D. invention
6.
A. difficult B. exciting C. interesting D. surprising
7.
A. from B. over C. by D. during
8.
A. dull B. dreamy C. tired D. peaceful
9.
A. regular B. excited C. clear D. lively
10.
A. shortened B. disturbed C. reset D. troubled
11.
A. moments B. senses C. feelings D. effects
12.
A. used B. allowed C. expected D. prevented
13.
A. miss B. none C. need D. lack
14.
A. show B. perform C. manage D. control
15.
A. With B. Except C. As well as D. Rather than
16.
A. waking B. moving C. living D. working
17.
A. repeat B. remain C. happen D. last
18.
A. believe B. agree C. realize D. allow
19.
A. others B. the other C. all other D. other
20.
A. only B. just C. still D. yet
高二英语完型填空简单题查看答案及解析
At the beginning of this century, medical scientists made an interesting discovery; we are built not just of flesh and blood but also of time. They were ________ to show that we all have “a body clock” ________ us, which controls the ________ and fall of our body energies, ________ us different from one day to the next.
The ________ of “a body clock” should not be too ________ since the lives of most living things are controlled ________ the 24 hour night-and-day cycle. We feel ________ and fall asleep at night and become ________ and energetic during the day. If the 24 hour-cycle is ________ , most people experience unpleasant ________ . For example, people who are not ________ to working at night can find that ________ of sleep causes them to ________ badly at work.
the daily cycle of sleeping and ________ , we also have other cycles which ________ longer than one day. Most of us would ________ that we feel good on some days and not so good on ________ ; sometimes our ideas seem to flow and at other times, they ________ do not exist.
1.A．anxious B．able C．careful D．proud
2.A．inside B．around C．between D．on
3.A．movement B．supply C．use D．rise
4.A．showing B．treating C．making D．changing
5.A．invention B．opinion C．story D．idea
6.A．difficult B．exciting C．surprising D．interesting
7.A．from B．by C．over D．during
8.A．dull B．tired C．dreamy D．peaceful
9.A．regular B．excited C．lively D．clear
10.A．disturbed B．shortened C．reset D．troubled
11.A．moments B．feelings C．senses D．effects
12.A．prevented B．allowed C．expected D．used
13.A．miss B．none C．lack D．need
14.A．perform B．show C．manage D．control
15.A．With B．As well as C．Except D．Rather than
16.A．working B．moving C．living D．waking
17.A．repeat B．remain C．last D．happen
18.A．agree B．believe C．realize D．allow
19.A．other B．the other C．all other D．others
20.A．just B．only C．still D．yet
高二英语完型填空中等难度题查看答案及解析
Schedules (timetables), as the 21st century people know, simply did not exist in the 17th and 18th centuries. We are upset if a plane arrives an hour late. Our ancestors weren’t upset if an April ship didn’t show up until June. They began to worry in July and were often happy when it showed up in August. When a long-distance ship finally did get to the port, the whole city became busy and excited. Businessmen hurried down to check the goods they had ordered. The ship would probably stay in port for at least three days, often a week, to take on businessmen, give the sailors a rest, find out about the latest news, weather conditions, and so on.
Travel time could only be approximate (近似的). One never knew when the winds would be good. So even though “average(平均的) sailing time” was given, time could change considerably, shortening the voyage (travel by sea) by up to 25% or putting it off by up to 500% or more! The average run from England to Boston was about a month and a half, but there were also voyages of three months. One voyage in 1640 lasted six months!
Travel time is not the same in both directions, due to the winds and currents. This is especially true in the Caribbean, where winds are from the southeast the entire year. Ships sailing west across the Atlantic spend longer than ships sailing east, and the contrary (opposite) winds can prevent a ship from actually making it to the harbor even if it gets close. One ship was held off the North Carolina coast for 17 days before being able to land!
1.What can we learn from the first paragraph?
A. No sailor was allowed to have fun when the ship reached land.
B. People in ancient times didn’t care about other people’s safety.
C. The ship would leave for a voyage when all of the preparations were made.
D. A long-distance ship would create a lot of excitement in the place where it landed.
2.According to the passage, travel time can’t be fixed due to _____.
A. the people at the port B. average sailing time
C. the changeable climate D. the businessmen and the sailors
3. The underlined word “currents” in the third paragraph means ______.
A. the movement of water B. the movement of winds
C. direction of the traveling ship D. travel time of ships
4.What is the difference between a modern voyage timetable and the one from the 17th or 18th century?
A. There were no exact timetables for traveling both in ancient and modern times.
B. Travel time was the same in both directions in ancient times while the modern one was not.
C. The modern voyage timetable is more exact than the ancient one.
D. The modern voyage timetable is only approximate while the ancient one was not.
5.Why did the ships sailing west spend longer than ships sailing east in Caribbean?
A. Because of the southeast winds the entire year.
B. Because sailors didn’t know when the winds blew.
C. Because travel time was not affected by wind.
D. Because sometimes the ship was held off by the wind.
高二英语阅读理解简单题查看答案及解析
At the beginning of the 20th century there were more than a million lions worldwide.Today there are less than 30,000 in the wild.The remaining lions are increasingly threatened by habitat loss，hunting activities to protect farms and cattle.
For generations，Masai tribesmen on the large African plains in southeastern Kenya have hunted lions—to protect their farms and cattle.Today they celebrate the lions’ life.
Noah is an elder in the Masai community.“We have decided as a community of the Masai to lay down our spears，and there will be no more killing of lions in our community.” He is part of a group of Masai visiting the United States promoting (推广) the Predator (捕食性动物) Compensation Program.
Conservation International’s Frank Hawkins explains，“The Masai have been living with wildlife for many generations and it has been a conflicting relationship in many ways.They compete with the animals for food as lions eat their cattle.We’re trying to find ways in which the wildlife will become something useful to them.” They had the Predator Compensation Fund founded in 2003.After much discussion，a group of Masai farmers agreed to protect lions.In turn，if lions or other predators kill their cattle，the Masai owner will be paid market value for the dead animals from the fund.
One man said that in the past，when a lion killed cattle，they killed it on the spot.And now，after the start of the program，the Masai see the lion population growing.Since 2003，only four lions have been killed here.
1.What is this passage mainly about?
A. The wildlife in the world.
B. Lions and the Masai.
C. The reason why lions are killed.
D. The living ways of the Masai.
2.What is the aim of the Predator Compensation Program?
A. To protect people in the wild.
B. To help the Masai protect their farms and cattle.
C. To protect lions only.
D. To protect the wildlife.
3.Masai tribesmen killed lions before 2003 ______.
A. because lions were dangerous for people there
B. because dead lions were worth a lot of money
C. because they wanted lions’ meat
D. because they wanted to protect their farms and cattle
4.According to the passage，why haven’t Masai tribesmen killed many lions since 2003?
A. Because lions don’t eat their cattle any more.
B. Because they will be fined if they kill lions there.
C. Because if a lion kills their cattle，they will be paid for the dead animals from the fund.
D. Because there are less than 30,000 lions in the wild now.
5.What do you think of the Masai?
A. Reasonable. B. Cruel.
C. Poor. D. Stupid.
高二英语阅读理解中等难度题查看答案及解析