Next summer after taking the national entrance examination, I’ll stay in Hainan Island, will surely be an exciting holiday. A. when B. which C. that D. where 查看更多

 

题目列表(包括答案和解析)

  Daniel Kunkle spent most of his time in graduate school playing with a colorful puzzle called a Rubik's Cube(魔方).He wasn't just goofing off.With clever computer programming, Kunkle figured out that any Rubik's Cube can be solved in 26 moves or fewer.

  ◆Cracking the cube

  Each side of a Rubik's Cube is divided into nine squares.When the puzzle is solved, all nine squares on each side are the same color as one another.Hinges(铰链)allow rows of squares to rotate.The squares of a Rubik's Cube can be arranged in about 43 quintillion(that's 43 with 18 zeros after it)possible ways.By hand, it can take a long time to find a solution.Even the world's fastest computer would need a long time to solve the problem.

  To save time, Kunkle and computer scientist Gene Cooperman of Northeastern University in Boston, Mass., looked for strategies to break the problem into smaller pieces.First, they calculated how many steps would be required to solve the puzzle using only half-turns, which send a square to the opposite side of the cube.Their study showed that only 600,000 possible configurations(结构)can be solved this way.Using a desktop computer, Kunkle discovered that all these arrangements could be solved in 13 moves or less.

  ◆Puzzle pieces

  Next, the researchers wanted to calculate how many steps would be necessary to turn any other configuration into one of the special 600,000 pre-solved arrangements.Results showed that it could be done in 16 moves or fewer.Remember that it took a maximum of 13 steps to solve one of these special configurations.In sum, the researchers concluded, any configuration could be solved in a maximum of 29 steps.

  Kunkle and Cooperman noticed, however, that only about 80 million configurations(far less than 1 percent of all possibilities)actually needed more than 26 steps to reach a solution.So, the pair focused on the few, hardest arrangements.This time, they searched through every possible way of solving each one in 26 steps and at the end they did it.The strategies that Kunkle and Cooperman used to solve the cube can be applied to other complicated problems, especially ones that require searching through lots of possibilities.Scheduling airplane flights to carry millions of people to a variety of destinations as quickly as possible is one example.

(1)

What does the passage mainly focus on?

[  ]

A.

What the best thinking strategy is.

B.

How a Rubik's Cube benefits us.

C.

How to play a Rubik's Cube.

D.

How Kunkle and Cooperman solved the cube.

(2)

In the second paragraph,“goofing off”means ________.

[  ]

A.

killing time

B.

enjoying his interest

C.

studying computer programming

D.

solving the puzzle

(3)

What strategy did Kunkle and Cooperman mainly use to solve the cube?

[  ]

A.

Thinking outside of the box.

B.

Dividing complicated problems into smaller pieces.

C.

Critical thinking.

D.

Focusing on finding new ideas and acting on them.

(4)

By half turns, how many possible configurations can be worked out?

[  ]

A.

43 quintillion.

B.

80 million.

C.

600 thousand.

D.

29 million.

(5)

With the example of“scheduling airplane flights”, the author intends to show us that ________.

[  ]

A.

scheduling airplane flights is a difficult task

B.

good arrangements can save a lot of time

C.

Kunkle and Cooperman also schedule airplane flights

D.

the strategies used to deal with the cube can be applied to other fields

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  Kidnappers(绑架者) are rarely interested in animals, but they recently took considerable interest in Mrs. Eleanor Ramsay's cat . Mrs. Eleanor Ramsay, a very wealthy old lady, has shared a flat with her cat, Rastus, for a great many years. Rastus leads an orderly life. He usually takes a short walk in the evenings and is always home by seven o'clock. One evening, however, he failed to arrive. Mrs . Eleanor Ramsay got very worried . She looked everywhere for him but could not find him.

  Three days after Rastus' disappearance .Mrs . Eleanor Ramsay received an anonymous( = nameless) letter. The writer stated that Rastus was in safe hands and would be returned immediately if Mrs. Eleanor Ramsay paid a ransom( = sum of money) of £1000. Mrs. Eleanor Ramsay was instructed to place the money in a cardboard box and to leave it out side her door. At first, she decided to go to the police, but fearing that she would never see Rastus again, the letter had made that quite clear. She changed her mind. She drew £1000 from her bank and followed the kidnapper's instructions. The next morning, the box had disappeared but Mrs. Ramsay was sure that kidnapper would keep his word. Sure enough, Rastus arrived punctually at seven o'clock that evening . He looked very well, though he was rather thirsty, for he drank half a bottle of milk. The police were greatly surprised when Mrs. Ramsay told them what she had done. She explained that Rastus was very dear to her. Considering the amount she said, he was dear in more ways than one!

  

1.Some kidnappers took considerable interest in Mrs. Ramsay's cat because ________.

[  ]

A.Mrs. Ramsay could and would pay a lot to get her only companion back

B.Mrs. Ramsay clearly loved her cat to have kept him so long

C.Rastus was an orderly cat and would be easy to look after if kidnapped

D.Mrs. Ramsay missed her cat whenever he was not back home on time

2.On what conditions did the kidnapper promise the safe return of Rastus?

[  ]

A.His name was not to be revealed and he wanted a ransom of £ 1000.

B.Mrs. Ramsay was not to inform the police and had to pay £ 1000.

C.Mrs. Ramsay had to leave her flat until the box with the money had gone.

D.Mrs. Ramsay was to draw £ 1000 from her bank and follow his instructions.

3.How was Rastus dear to Mrs. Ramsay in more ways than one?

[  ]

A.She was very fond of him and it had cost her a lot to get him back.

B.Besides the high ransom paid for him he drank a lot of milk

C.He was so dear that she had not dared tell the police of the kidnapping.

D.He was very valuable and she valued him greatly.

4.Mrs. Eleanor Ramsay is a very wealthy lady who ________ a flat with her cat Rastus, for a great many years.

[  ]

A.shares
B.has shared
C.shared
D.had shared

5.She searched for him but could not find him ________

[  ]

A.nowhere
B.somewhere
C.everywhere
D.anywhere

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B
It was a warm April day when a big fat envelope came in the mail from the only college I had ever imagined attending. I tore open the packet. My eyes were fixed on the word "congratulations". I don't remember ever smiling so wide.
Then I looked at my financial (财政的) package. The cost of Dream School's tuition( 学费), room and board was around. $40,000—an impossible sum! How could I afford to attend? What good reasons did I have to go there when three other fine colleges were offering me free tuition? My other choices were good, solid schools even if they weren't as famous as my first choice.
In my mind, attending my dream university would be the only way to realize my dream of becoming a world-class writer. My parents understood how I felt. They told me that even though it would be a financial problem, I could go wherever I would be happiest. But as I was always careful with money, I wasn't sure what to do.
One of the schools that offered me a full ride had an informational dinner one night in the spring. Considering my parents' financial difficulties, I decided to drive the 45 minutes and attend. At first, all I’d planned to do was smile politely, eat free food, listen quietly. But I surprised myself.
At dinner the president of the university talked about the wonderful, activities on campus ( 校园 ) including guest lectures and social gatherings. He also made it perfectly clear that free food would be offered at all future events. He continued with explanations of professors, class sizes, activities, and sporting events on campus. As he spoke, I began to realize that this school, though not as good as my first choice, might be the best one for me. It seemed small yet with many great programs. It seemed challenging yet caring.
As the president ended his speech, we clapped politely and pushed back our chairs. As I walked out that door, a feeling of to comfort washed over me. Looking at the campus that night, I realized that I would be spending the next four years right there.
In all honesty, my university is not as well-known as my "dream" university. However, it turned out to be the right choice of schools for me.     
62. How did he author feel when he started to read the letter?
A. He was full of joy.                     B. He was lost in his dream.
C. He was worried about the money          D. He was uncertain which school to go.
63. We can learn from the passage that the parents were_______.
A. honest.        B. strict          C. supportive          D. decisive
64. In Paragraph 5, "offered me a full ride" can be replaced by "______".
A. would pay for transport to the school      
B. would show me around the campus
C. would offer free meals at all events       
D. would charge me nothing for tuition
65. What does the author mainly want to say?
A. Your second-choice college may actually be your best fit.
B. You should consider comfort in your choice of schools.
C. You should try your best to attend your dream school.
D. Your choice of schools should be based on their fame.

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  阅读下面短文,掌握其大意,然后从11-30各题所给四个选(A、B、C和D)中选出最佳选项.

  Johny Conman was lazy. He had finished his education and was happy to sit in his room and 1 to the radio all day long 2 , he had been doing nothing for almost six months, which worried his father very much. One day Conman 3 that he had to do something.

  “Johny, when I was your age, I was working and 4 my ten brothers and sisters. I want you to go out and get a 5 .”So than is what he did. In fact, in the next three months, John started ten jobs and was 6 from ten jobs, He explained to his father.

  “They wanted me to work at 8 a.m. and told me to do all sorts of 7 things. A tiresome day to day job is not for me.”

  Mr Conman decided to put his foot down.

  “I don't 8 how you do it,” he said. “Either you earn some money or move out of the house. I give you one week.”

  In the next 9 days Johny began to change. He still stayed in his room10 , but spent his time writing letters or reading through the newspapers. More and more post began to arrive for him. He 11 a new suit for himself and invited his parents to the theatre and 12 afterwards at the most expensive restaurant in town. When his 13 parents arrived home after their evening hour, a policeman was waiting at the front door.

  “Johny Conman,”he said as he 14 him a piece of paper. “I'll see you in the court tomorrow.”

  When they got inside, Johny told his parents everything, “When you told me to 15 some money, I decided to put an advertisement in the newspaper, saying 'New way to make money fast! Send me $5 and I'll tell you my 16 '. When I received the money I wrote back 17 people advertise a new money-making plan in the paper and wait for the 18 to send them money.”

  John was fined $250 by the court and ordered 19 all the people back. As he left the court-house feeling very 20 , a newspaperman came up to him, “Young man, would you like to tell your story to my newspaper for $200?”

(1)

[  ]

A. listening
B. listened
C. listen
D. listens

(2)

[  ]

A. Rather
B. Actually
C. Truly
D. Really

(3)

[  ]

A. proved
B. was sure
C. believed
D. decided

(4)

[  ]

A. raising
B. supporting
C. keeping
D. leading

(5)

[  ]

A. work
B. salary
C. job
D. sum of money

(6)

[  ]

A. away
B. in
C. praised
D. prevented

(7)

[  ]

A. pleasant
B. unpleasant
C. interesting
D. little

(8)

[  ]

A. suggest
B. care
C. take care of
D. look after

(9)

[  ]

A. some
B. ten
C. few
D. later

(10)

[  ]

A. all day
B. all night
C. whole day
D. day long

(11)

[  ]

A. stole
B. borrowed
C. made
D. bought

(12)

[  ]

A. to play games

B. to have fun

C. to have dinner

D. to sleep

(13)

[  ]

A. angry
B. proud
C. worried
D. surprised

(14)

[  ]

A. handed
B. sent
C. wrote
D. read

(15)

[  ]

A. achieve
B. make
C. win
D. raise

(16)

[  ]

A. thought
B. mind
C. secret
D. idea

(17)

[  ]

A. telling
B. asking
C. persuading
D. wanting

(18)

[  ]

A. people
B. persons
C. fools
D. gentlemen

(19)

[  ]

A. to bring
B. to pay
C. to repay
D. to give

(20)

[  ]

A. sorry
B. ashamed
C. unhappy
D. restless

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Children love to send and receive e-mails. The same with electronic greeting cards, for Valentine’s Day or many other occasions.

E-cards are available for free on the Internet. Most electronic greeting card sites give you a wide selection of choices and let you personalize your card.

Unlike with traditional printed cards, you don’t schlep(拖曳) to a card store to make your selection, you don’t fork out any money. Delivery is immediate; there’s no postage required and you are not using paper.

But the best thing about these card sites is that they animate and play music, which makes them very cool to kids.

Most electronic greeting card sites are similar in set-up. Upon entering the site, you select a category of card that interests you. The next screen shows you a series of possible card choices. By clicking on one that appeals(有感染力) to you, the card will enlarge and may animate. If there is music with the card, it will start to play.

Usually there is a place to click to see the second (inside) page of the card. The site then offers you ability to personalize the card you have selected; you may be able to change the proposal message or add to it. At some sites, you can even add voice, video or photos to the cards.

Once you have personalized the e-card, you enter the e-mail address for delivery. Your recipient(接受者)will get an e-mail telling them to go to a specific web address to view the card you have made. You may be able to send the same card to multiple recipients. The delivery can be immediate, or you can choose to have it delivered on a specific day.

Most electronic greeting card sites, like many other fields, have lots of advertising. Many make their money by enticing(诱惑) people to buy extra stuff like gift certificates to add to navigate through this commercialism(利润第一主义)and to hand in areas that are fun and appropriate for them.

1All of the following are the advantages of electronic greeting cards except cards except that     .

A. you still have to pay a small sum of money to send e-cards

B. e-cards are available for free on the Internet

C. e-cards are very cool to kids because they have cartooned pictures and some music to go with it

D. the delivery of e-cards is immediate

2What’s the main topic of the first four paragraphs?

A. The advantages of using personal computer.

B. The development of modern postal and telecommunication service.

C. The reasons why children love to send and receive e-cards.

D. The advantages and disadvantages of traditional printed cards.

3The underlined wordavailable(in Paragraph 2)means     .

A. Interesting                   B. buyable

C. existing                   D. able to be got or used

 

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