The most exciting storms are the ones with flashes of lightning.Unfortunately,those are scarce,unless you are near the Catatumbo River in Northwestern Venezuela.Here,nature's grandest sound and light 题目和参考答案——青夏教育精英家教网—

题目内容

The most exciting storms are the ones with flashes of lightning.Unfortunately,those are scarce,unless you are near the Catatumbo River in Northwestern Venezuela.Here,nature's grandest sound and light show is often seen, because it happens about 160 nights a year.And it lasts for as long as 10 hours at a time.And unlike other lightning storms that cause just one or two flashes,this one is with as many as 280 per hour.It is the highest in the world. Besides,each one of them is so powerful that each can power every light bulb in South America.Not surprisingly,they can be seen for almost 250 miles.Fishermen and sailors often use them to guide them across the waters during dark nights.

What's even more surprising is that the lightning has been happening above the same spot where the Catatumbo River meets Lake Maracaibo for thousands of years.The best part is that the show is different every night.That's because the color of the lightning changes,depending on the amount of water in the atmosphere.On dry nights,the lightning appears white.When the air is not dry,it helps split up the bright light into red,orange and even purple.

Strangely enough,though this has been going on for centuries,scientists have still not been able to figure out the cause of this phenomenon.Some say that the storms are the result of the interaction of the area's unusual topography（地貌）,wind and heat.Others,however,believe that the storms are caused by a kind of gas in the area.The locals simply think that it is the "spirit of Catatumbo" that lights up the night sky.

1.According to Paragraph 1,if we say something is scarce,we probably mean .

A. it is far away B. it is very terrible

C. it can be hardly seen D. it can be very dangerous

2.We know that in Northwestern Venezuela, .

A. people daren't go out at night

B. it rains heavily almost every day

C. lightning is used to power light bulbs

D. storms with flashes of lightning are common

3.What has the greatest influence on the colors of the lightning?

A. The spot of the lightning

B. The air of the lightning spot

C. The color of the environment

D. The level of water in the Catatumbo River

4.From the last paragraph,we learn that .

A. scientists will no longer study the lightning storms there

B. locals know about the lightning storms better than scientists

C. heat in Northwestern Venezuela is different from any other place

D. the reason why such lightning storms happen there is still unknown

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Long before Barack Obama became president of the United States, he wrote a book 1. (call) Dream from My Father: A Story of Race and Inheritance, which has since become 2. bestseller. It is an 3. (appeal) book that includes what he went through during 4. (he) childhood. Obama has little contact with his father 5. roots were in Kenya because he left home when Obama was very young. His mother got married 6. a student from Indonesia shortly after the family moved to Jakarta. A few years later, Obama came back with his grandparents to Hawaii, where he 7. (attend) a private high school. 8. (study) at Columbia in New York City, he then entered Harvard Law School. This autobiography also touches 9. (heavy) on Obama’s exposure to racism. Readers will find his reflections of childhood 10. (experience) which involved racial discrimination to be especially moving.

阅读下面短文，从短文后各题所给的A、B、C和D四个选项中，选出可以填入空白处的最佳选项，并在答题纸上将该项涂黑。

Alia Baker is a librarian in Iraq. Her library used to be a 36 place for all who loved books and liked to share knowledge. They 37 various matters all over the world. When the war was near, Alia was 38 that the fires of war would destroy the books, which are more 39 to her than mountain of gold. The books are in every language — new books, ancient books, 40 a book on the history of Iraq that is seven hundred years old.

She had asked the government for 41 to move the books to a 42 place, but they refused. So Alia took matters into her own hands. 43 , she brought books home every night, 44 her car late after work. Her friends came to 45 her when the war broke out. Anis who owned a restaurant 46 to hide some books. All through the 47 , Alia, Anis, his brothers and neighbours took the books from the library, 48 them over the seven-foot wall and 49 them in the restaurant. The books stayed hidden as the war 50 . Then nine days laters, a fire burned the 51 to the ground.

One day, the bombing stopped and the 52 left. But the war was not over yet. Alia knew that if the books were to be safe, they must be 53 again while the city was 54 . So she hired a truck to bring all the books to the houses of friends in the suburbs(郊区). Now Alia waited for the war to end and 55 peace and a new library.

1.A. meeting B. working C. personal D. religious

2.A. raised B. handled C. reported D. discussed

3.A. worried B. angry C. doubtful D. curious

4.A. practical B. precious C. reliable D. expensive

5.A. then B. still C. even D. rather

6.A. permission B. confirmation C. explanation D. information

7.A. large B. public C. distant D. safe

8.A. Fortunately B. Surprisingly C. Seriously D. Secretly

9.A. starting B. parking C. filling D. testing

10.A. stop B. help C. warn D. rescue

11.A. intended B. pretended C. happened D. agreed

12.A. war B. night C. building D. way

13.A. put B. opened C. passed D. threw

14.A. hid B. exchanged C.burnt D. distributed

15.A. approached B. erupted C. continued D. ended

16.A. restaurant B. library C. city D. wall

17.A. neighbours B. soldiers C. friends D. customers

18.A. sold B. read C. saved D. moved

19.A. occupied B. bombed C. quiet D. busy

20.A. dreamed of B. believed in C. cared about D. looked for

Xie lei's 1. course is helping her to get used to the 2.requirements of a Western university. "I remember the first 3. I did for my tutor." she told me. I found an article on the Internet 4. seemed to have exactly the information I needed. So I made a summary of the article, 5. my draft and handed the essay in.

In the 18th century California was 6.by Spain.Spanish soldiers first arrived in South America in the early 16th century,when they fought against the native people and took their land.Two centuries later,the Spanish 7.in most parts of South America and along the northwest coast of 8.we now call the United States.

Cloning plants is 9.while cloning animals is very complicated.It is a difficult task to undertake.Many10.to clone mammals failed.

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下短文。短文中共有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号（∧），并在此符号下面写出该加的词。

删除：把多余的词用斜线（＼）划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1.每处错误及其修改均仅限一词；

2.只允许修改10处，多者（从第11处起）不计分。

Time flies!A year has past since I came to this school.Many colorful activities had been organized by our school. What impressed me most was a activity called "Learning to Farm".In an autumn afternoon,we were sent to a farm which we learned lo plant potatoes.Having been in the city for so a long time,we were so happy to go to the countryside.After divided into three groups,we started to work.Some students cut potatoes into pieces;some dug holes,and others put the pieces of potatoes into the hole,put the earth back and pushed them down hard.We continued doing that until all the work was done.Although we were exhausted,but we felt fulfilled on our way back home.

根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Every animal sleeps, but the reason for this has remained foggy. When lab rats are not allowed to sleep, they die within a month. 1

One idea is that sleep helps us strengthen new memories. 2 We know that, while awake, fresh memories are recorded by reinforcing (加强) connections between brain cells, but the memory processes that take place while we sleep have been unclear.

Support is growing for a theory that sleep evolved so that connections between neurons(神经元) in the brain can be weakened overnight, making room for fresh memories to form the next day. 3

Now we have the most direct evidence yet that he is right. 4 The synapses in the mice taken at the end of a period of sleep were 18 per cent smaller than those taken before sleep, showing that the connections between neurons weaken while sleeping.

If Tononi’s theory is right, it would explain why, when we miss a night`s, we find it harder the next day to concentrate and learn new information — our brains may have smaller room for new experiences.

Their research also suggests how we may build lasting memories over time even though the synapses become thinner. The team discovered that some synapses seem to be protected and stayed the same size. 5 “You keep what matters,” Tononi says.

A. We should also try to sleep well the night before.

B. It’s as if the brain is preserving its most important memories.

C. Similarly, when people go for a few days without sleeping, they get sick.

D. The processes take place to stop our brains becoming loaded with memories.

E. That’s why students do better in tests if they get a chance to sleep after learning.

F. “Sleep is the price we pay for learning,” says Giulio Tononi, who developed the idea.

G. Tononi’s team measured the size of these connections, or synapses, in the brains of 12 mice.

If the new safety system _______ to use, the accident would never have happened.

A. had been put B. were put C. should be put D. would be put

A new commodity brings about a highly profitable, fast-growing industry,urging antitrust（反垄断）regulators to step in to check those who control its flow. A century ago, the resource in question was oil. Now similar concerns ares being raised by the giants（巨头）that deal in data, the oil of the digital age. The most valuable firms are Google, Amazon, Facebook and Microsoft. All look unstoppable.

Such situations have led to calls for the tech giants to be broken up. But size alone is not a crime. The giants’ success has benefited consumers. Few want to live without search engines or a quick delivery. Far from charging consumers high prices, many of these services are free (users pay, in effect, by handing over yet more data). And the appearance of new-born giants suggests that newcomers can make waves, too.

But there is cause for concern. The internet has made data abundant, all-present and far more valuable, changing the nature of data and competition. Google initially used the data collected from users to target advertising better. But recently it has discovered that data can be turned into new services: translation and visual recognition, to be sold to other companies. Internet companies’ control of data gives them enormous power. So they have a “God’s eye view” of activities in their own markets and beyond.

This nature of data makes the antitrust measures of the past less useful. Breaking up firms like Google into five small ones would not stop remaking themselves: in time, one of them would become great again. A rethink is required—and as a new approach starts to become apparent, two ideas stand out.

The first is that antitrust authorities need to move form the industrial age into the 21st century. When considering a merger(兼并), for example, they have traditionally used size to determine when to step in. They now need to take into account the extent of firms'data assets(资产) when assessing the impact of deals. The purchase price could also be a signal that an established company is buying a new-born threat. When this takes place, especially when a new-born company has no revenue to speak of, the regulators should raise red flags.

The second principle is to loosen the control that providers of on-line services have over data and give more to those who supply them. Companies could be forced to consumers what information they hold and how many money they make form it. Govemments could order the sharing of certain kinds of data, with users' consent.

Restarting antitrust for the information age will not be easy But if govemments don't wants a data oconomy by a few giants, they must act soon.

1.Why is there a call to break up giants?

A. They have controlled the data market

B. They collect enormous private data

C. They no longer provide free services

D. They dismissed some new-born giants

2.What does the technological innovation in Paragraph 3 indicate?

A. Data giants’ technology is very expensive

B. Google’s idea is popular among data firms

C. Data can strengthen giants’ controlling position

D. Data can be turned into new services or products

3.By paying attention to firms’ data assets, antitrust regulators could .

A. kill a new threat B. avoid the size trap

C. favour bigger firms D. charge higher prices

4.What is the purpose of loosening the giants’ control of data?

A. Big companies could relieve data security pressure.

B. Governments could relieve their financial pressure.

C. Consumers could better protect their privacy.

D. Small companies could get more opportunities.

Rocky Mountain Summer Adventure Camps Bring Learning to Life!

The Museum of Idaho Rocky Mountain Adventure Camps are available for students aged 6-14. Participants will have amazing outdoor experiences combined with adventure and fun. Space is limited to 20participants each session and registration is not complete until payment has been received by the Museum of Idaho. Registration fee is non-returnable.

Junior Adventure Camp

Children aged 6-9 (must have completed first grade).

Well conduct experiments, go on field trips, and discover the fun and excitement of science! This year, we will learn about colonial（殖民主义的）science to go along with our exhibit, America’s Revolution!

Instructor: Chloe Doucette

Dates: June 27- June30

Time: 9:00 a.m. - noon

Cost: $75 per child, $60 per child for MOI members, $50 each additional brother or sister

Original Camp

Children aged 9-12 (must have completed third grade)

Original Camp is for children who are ready for an exciting full-day outdoor camp. Participants visit various habitats and ecosystems as we explore eastern Idaho. Well go bird watching, hiking in the mountains, and lots more!

Instructors: Alana Jensen, Jerry Petty

Dates: July 18- July21

Time: 9:00 a.m. 4:00 p.m.(9:00-6:00 on the last day)

Cost: $150 per child, $125 per child for MOI members, $100 each additional brother or sister

High Adventure Camp

Youth aged 11-14 (must have completed fifth grade)

High Adventure Camp is for youth who are looking for an amazing summer adventure! This outdoor camp is full of exciting physical challenges and involves participants in even more in-depth activities than the Original Camp. This year, students will study how rattlesnakes experience the outdoors!

Instructors: Chloe Doucette, Mike Winston, Jerry Petty

Dates: August 8- August 11

Time: 9:00 a.m. 4:00 p.m.(9:00 6:00 on the last day)

Cost: $150 per child, $125 per child for MOI members, $100 each additional brother or sister

Participate in both Original AND High Adventure for only $200! Call522-1400 ext. 3002 to take advantage of this great offer. If you have any questions about the Museum of Idaho’s education programs, contact Chloe Doucette, Education Director at (208) 522-1400 ext.3002.

1.If participants want to register successfully, they need to _________.

A. choose their favorite instructors

B. make up a team of 20 participants

C. be accompanied by family

D. pay for the fee ahead of time

2.To make experiments, what will a 9-year-old boy choose?

A. Original Camp. B. Junior Adventure Camp.

C. High Adventure Camp. D. Three of them.

3.How much will a child and his brother spend at least if they sign up for both Original and High Adventure Camp?

A. $400. B. $450.

C. $500. D. $550.

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