Haveyouheardofsnakerobots?Scie

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更新 2022-09-03
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Have you heard of snake robots? Scientists and doctors are already using tiny snakes that coil through the human body armed with sharp surgical tools to perform operations on hearts, prostate cancer, and other diseased organs. The snake robots that carry tiny cameras, scissors and forceps, and even more advanced sensors are being developed.
The next generation of the robots will be wireless, and will explore inside your body on their own--- not attached to any cables. For now, they are powered by cables that humans control. Experts say the day is coming when some robots will roam around the body on their own. But the experts in robotics say the new creations work best when they are designed for very specific tasks.
Howie Choset has been researching and building robots, particularly snake robots. He believes that his snake robot and others like it can help reduce medical costs by making complex surgery faster and easier. Choset says his new design is smaller and more flexible than earlier models.
The size of surgical robots allows surgeons to operate with far less damage to the body, helping the patient heal faster. Choset has also built larger snake robots designed for search and rescue, or just exploration. They can climb poles and trees and then look around through a camera in the head and slither through places that humans cannot reach.
“ We sent our snake robots into these caves in the Red Sea to look for evidence of ancient Egyptian ships,” he said. “ To me, archeology is like search and rescue, but everyone has been dead for 5,000 years.”
The doctors are very excited about the potential for surgical robots to do things that humans can’t do. The variety of sensors available for surgical robots keeps expanding. As they get smaller, maybe one day they will be able to test chemicals or blood in the body, or even the electrical connections in nerves.
What can we learn from the first paragraph?

A．The doctors carry out surgery using snake robots mainly for heart disease.

B．The doctors are very satisfied with the new snake robots during surgery.

C．Snake robots are completely free of human control today.

D．Other supplementary appliances will be added to snake robots.

Which of the following is true, according to the passage?

A．Snake robots are only used in the medical field.

B．Snake robots can reduce the patients’ medical costs.

C．Scientists are uncertain about the prospects for snake robots.

D．Scientists are forced to spend a lot of time researching snake robots.

How can snake robots work best, according to the passage?

A．When they carry tiny cameras, scissors and forceps.

B．When they are operated by experienced doctors.

C．When they are given a wireless function.

D．When they are designed for particular tasks.

Why do we know about Howie Choset, according to the passage?

A．He thought snake robots of different sizes can be used for different types of surgery.

B．He thought patients’ pain had been slightly reduced with the help of snake robots.

C．He also made snake robots for search, rescue and exploration.

D．He is very interested in researching ancient Egyptian ships.

The writers attitude towards the new technology is ______.

A．optimistic

B．doubtful

C．objective

D．negative

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C
Sunday, October 5
Clear, 69°F
My wife, Eleanor , and I took the train from Paris to Strasbourg, where we were met by our driver and guide. And the minibus which goes along with the boat. We stopped off in Barn for an hour on the way. Then we were taken to Nancy where the boat was kept.
After the other passengers arrived, we had our first dinner on the boat. After dinner we walked into downtown Nancy, a village with a large square and wooden houses.
Monday, October 6
Rained last night, cloudy in the morning, 69°F
We spent about two hours in Nancy, then sailed on the Canal de la Marne au Rhine. Kind of a lazy day. Eating breakfast, lunch, and dinner, after dinner we watched a tape on Baccarat, where we will visit tomorrow.
It was pleasant to sit out on deck （甲板）and watch the scenery go by at about 3 mph.
Tuesday, October 7
Light rain, 64°F
This morning we drove over to Baccarat and toured its museum and the church , which has this unbelievable lamp that is going on a world tour the next day. We did lost of shopping , then walked across the bridge to see a very , very modern Catholic church with special Baccarat windows.
We drove to the top of the Voges Mountains and started down the eastern side. Later we drove to Sorrenbourg to see the 13th century church at the Cordeliers. It contains the largest window by Marc Chagall — 24 feet wide by 40 feet high.
Wednesday, October 8
Cloudy, 65 °F
Today we sailed from Schneckenbush to Saverne. We went through two caves, an extremely unusual part of the journey. This river scenery is very different. We were in a mountain valley with grassland on one side and a forest beginning to show some color on the other.
Thursday, October 9
Cloudy, 66°F
Our dependable minibus was waiting to load the luggage and take us to the hotel where everyone went their separate ways. Our boating days are over until next time.
49. Where did the author get off the train?
A. Paris            B. Strasbourg           C. Nancy         D. Barn
50. On which days did the tourists spend most of their time on the boat?
A. Monday and Tuesday        B. Tuesday and Wednesday
C. Wednesday and Wednesday      D. Monday and Wednesday
51. From the text, we learn that Baccarat and Sorrenbourg are the names of_________.
A. towns           B. churches              C. museums       D. mountains
52. What does the author think of the tour?
A. Tiring           B. Expensive             C. Enjoyable      D. Quick

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B
Societies all over the world name places in similar ways. Quite often there is no official naming ceremony but places tend to be called names as points of reference by people. Then an organized body steps in and gives the place a name. Frequently it happens that a place has two names: One is named by the people and the other by the government. As in many areas, old habits died hard, and the place continues to be called by its unofficial name long after the meaning is lost.
Many roads and places in Singapore（新加坡） are named in order that the pioneers will be remembered by future generations. Thus we have names such as Stamford Road and Raffles Place. This is in keeping with traditions in many countries ---- in both the West and the East.
Another way of naming places is naming them after other places. Perhaps they were named to promote friendships between the two places or it could be that the people who used to live there were originally from the places that the roads were named after. The mystery is clearer when we see some of the roads named in former British bases. If you step into Selector Airbase you will see Piccadilly Circus ---- obviously named by some homesick Royal Air Force personnel.
Some places were named after the activities that used to go on at those places. Bras Basah Road is an interesting example, “Base Basah” means “wet rice” in Malay（马来语）. Now why would anyone want to name a road “Wet Rice Road”? The reason is simple. During the pioneering days, wet rice was laid out to dry along this road.
A few roads in Singapore are named by their shapes. There is “Circular Road” for one. Other roads may have part of their names to describe their shapes, like “Paya Lebar Crescent”. This road is called a crescent（月牙） because it begins on the main road, makes a crescent and comes back to join the main road again.
45. We learn from Paragraph 1 that _____.
A. the government is usually the first to name a place
B. many places tend to have more than one name
C. a ceremony will be held when a place is named
D. people prefer the place names given by the government
46. What does the underlined phrase “die hard” in Paragraph 1 probably mean?
A. Change suddenly.                                  B. Change significantly（有重大意义的）.
C. Disappear mysteriously.                         D. Disappear very slowly.
47. Which of the following places is named after a person?
A. Raffles Place.                                       B. Selector Airbase.
C. Piccadilly Circus.                                  D. Paya Lebar Crescent.
48. Bras Basah Road is named _______.
A. after a person           B. after a place              C. after an activity         D. by its shape

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第二部分：阅读理解（共25小题。第一节每小题2分，第二节每小题1分；满分45分）
第一节阅读下列短文，从每题所给的四个选项（A、B、C、D）中，选出最佳选项，并在答题卡上将该项涂黑。
A
Young people and older people do not always agree. They sometimes have different ideas about living, working and playing. But in one special program in New York State, adults and teenagers live together in a friendly way.
　　Each summer 200 teenagers and 50 adults live together for eight weeks as members of a special work group. Everyone works several hours each day. They do so not just to keep busy but to find meaning and fun in work. Some teenagers work in the forests or on the farms near the village. Some learn to make things like tables and chairs and to build houses. The adults teach them these skills.
　　There are several free hours each day. Weekends are free, too. During the free hours some of the teenagers learn photo-taking or drawing. Others sit around and talk or sing. Each teenager chooses his own way to pass his free time.
　　When people live together, they should have rules. In this program the teenagers and the adults make the rules together. If someone breaks a rule, the problem goes before the whole group. They talk about it and ask, “Why did it happen? What should we do about it?”
　　One of the teenagers has said something about it, “You have to stop thinking only about yourself. You learn how to think about the group.”
41. In one special program in New York State, young and older people_______.
　A. don’t work well together                                B. are friendly to each other
　 C. teach each other new ways of building houses
　D. spend eight weeks together, working as farmers
42. All the members work some time every day mainly to________.
　 A. lead a busy life                                           B. learn new skills of farming
　C. get used to the life on the farms                        D. find useful things and pleasure in work
43. Living together, ________.
　 A. the teenagers don’t have to obey the rules
　B. the members have to obey the rules the adults make
　 C. the members have no free time but on weekends
　D. the members should not break the rules they make together
44.The best title for the passage is________.
　A. The Rules of Living Together                 B. Life in New York State
　C. Teenagers and Adults Together          D. Free Hours in the Special Work Group

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B
Everyone needs friends. There is an old saying, “Friends are God’s way of taking care of us.” But how do you find real friendship and keep it?
The American writer Sally Seamans tells young students some smart ways to find friends. Sally says finding friendship is just like planting a tree. You plant the seed and take care of it to make it grow.
First, you should choose a friend. What makes a good friend? It is not because a person has money or good looks. A good friend should be kind and patient. For example, if you have a bad day, a good friend should listen to your complaints and do his or her best to help. To make a friend, you cannot be too shy. You should make each other happy and share your lives.
But things cannot always he happy. Even the best friends have fights. What should you do when you have a fight with your friend? You have to talk to him or her. When there is no one around, have an honest talk. If he or she doesn’t want to talk, you could write a letter.
There are three steps to being friends again:
Tell him or her how you are feeling; say what your friend has done wrong, and explain why you did this or that. Remember that friendship is the most important thing in your life.
51. Sally wants to tell students the ways to ____.
A. find friends         B. plant trees       C. get happy       D. keep fit
52. What makes good friends? A good friend should ______.
A. be lovely and cool                           B. be kind and patient
C. have lots of money                    ` D. have good looks
53. According to the text, you can _____ your friend after a fight.
A. buy a present for                     B. never say a word to
C. have dinner with                     D. write a letter to
54. What is the best title of the text?
A. Teenagers and friendship               B. The good friends around you
C. The trouble of growing up              D. The care and keeping of friends
55. Which of the steps to being friends again is NOT mentioned(提及) in this passage?
A. Tell him or her how you are feeling;
B. Say what your friend has done wrong,
C. Explain why you did this or that
D. Give him or her some money

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V. 阅读理解(共40分)
第一节,阅读下列材料，从A、B、C、D四个选项中选出最佳答案，并把答题卡上对应题目的答案标号涂黑。(共20小题, 每小题2分, 共40分)
A
Mr．and Mrs．White had two sons and three daughters．One Sunday，Mrs. White said to her husband，“The children don’t have any lessons today，and you’re free too．There’s a new funfair(游乐场)in the park．Let’s all go there to play.
Her husband said，“1 want to finish some work today. “oh, forget it．Go there and make our children happy．That’s the most important work” Mrs. White said.
So Mr. and Mrs. White took their children to the funfair．Mr. White was forty-five years old.
but he enjoyed the funfair more than his children. He hurried from one thing to another，and ate lost of sweets. One of the children said to her mother，“Dad is just like a small child，isn’t he, Mom?” Mrs. White didn’t want to follow her husband around any more at that time and answered， He is even worse than a small child，Mary，because he might spend more money than a small child.
46. There were ________ children in the White family•
A. two    B. three    C. four     D. five
47．One Sunday，Mr．and Mrs. White wanted to go to _______ with their children.
A．school   B. work    C. a funfair   D. a shop
48．Mr．White liked the place so much that he_______.
A．bought lots of sweets         B. followed his wife all the time
C．hurried from one thing to another     D. asked a lot of questions
49．From the story we know Mrs．White________ when Mary asked her the question.
A．was still excited to play      B. was a little angry with Mr. White
C．looked for Mr．White everywhere    C. are a lot of sweets
50．Of all he family members,_________ enjoyed playing there most that Sunday.
A．Mr．White    B．Mrs．White   C. Mary    D. the boys

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