It is possible to do many simple tricks with numbers. Here is one trick. It has seven steps.

First, write down your house number. For example, if your address is 73 Lemon Street, you would write down 73.

Next, double it. In other words, multiply(乘) it by two. Then, add five to this doubled number. For example, if your address was 73 and you doubled it, you would get 146. Then, if you added five, you’d get 151.

So, to repeat the first three steps, write down your house number, double it, and add five.

Fourth, multiply this number by 50. In our example here, if you multiply 151 by 50, you’ll get 7550.

The fifth step is to add your age to this total. For example, if you’re 26 years old, you should add 26 to this total. In our example here, the result would be 7550 plus 26, you’ll get 7576.

Sixth, you have to add the number of days in a year, which is 365. In our example here, 365 added to 7576 is 7941.  

The seventh and final step is this: subtract(減) 615 from the number that you have. In our example, 7941 minus 615 is 7326.

The result here, 7-3-2-6, is the trick. The first part of the number is the address and the last part of the number is the age of the person. That is, 73 is the address that we started with, and 26 is the age that we used.

If you follow these seven steps with any address and the age of any person. You will get the same result.

73 According to the trick, what number can you get if you are 16 years old and your house number is 85？

A. 1685              B. 8516              C. 8165              D. 1658

74. How can your age number appear at the last part of the result?

A. It’s really a trick.

B. By taking all the steps except Step1 and Step 2.

C. By taking Step 6 and Step 7.

D. By taking all the steps.

75. What’s the secret of the trick?

A. It’s impossible to know.

B. By taking Step 2 and Step 4, we get the formula(公式)：your address number ×2×50.

C. By taking all the steps except 1 and 2, we get the formula: 5×50+your age number+365－615=your age number.

D. Both B and C.

 

【答案】

 

 B

 D

 D

【解析】             

 

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源： 題型：

This is not an economical way to get more water; ________, it is very expensive.

A．on the contrary        B．on the other hand

C．in a word         D．rather than

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：

. It is difficult for us to learn a lesson in life __________ we’ve actually had that lesson.

A. until   B. after

C. since   D. when

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：閱讀理解

 Dorothy Brown was very happy as she sat in the theatre listening to the music. Today her little daughter Lauren was giving her ___1___ concert. She had been waiting for this __2__ for years and years. “Now it is here at last,” she thought. “How beautiful her ___3___ is.”

The song made her ___4___ to the days when she was Lauren’s ___5___. As a young ___6___, Dorothy wanted to be a concert singer. She studied ___7___ in France, Italy and in the United States. “You can become a fine ___8___ in the future,” her teachers told her. “But you must be ___9___ to study hard and work for many years. There will be ___10___ time for anything but music in your life.”

Dorothy was ___11___ at that time and she was ___12___ that music was all she wanted or needed to ___13___ her life. For almost a year Dorothy  ___14___  of nothing else. Then she ___15___ David,  a young engineer traveling Europe. They soon fell in ___16___. David asked her to be his ___17___. Dorothy also wanted to marry David. But she loved ___18___, too. She didn’t know what to do. David was against her being a singer. He said, “If you want to be a singer, you must forget about getting married. You can’t ___19___ do both.” Thus her days were gone and would never return.

Now Lauren became a singer instead of her, which was her ___20___.

1. A. sorry      B. successful   C. first    D. wonderful

2. A. dance     B. moment     C. show   D. party

3. A. voice      B. face    C. dress   D. life

4. A. think of  B. bring back  C. go back      D. come back

5. A. age B. friend C. mother       D. teacher

6. A. musician B. pop star      C. lady    D. girl

7. A. French   B. music  C. piano  D. dance

8. A. actress    B. student       C. singer D. dancer

9. A. prepared B. learning     C. driven D. waiting

10. A. some    B. any     C. no     D. enough

11. A. eight     B. eighteen     C. eighty D. eighty-eight

12. A. lucky    B. sure    C. afraid  D. fond

13. A. fill       B. live     C. lead    D. take

14. A. heard    B. knew  C. talked D. thought

15. A. saw off       B. learned from      C. heard of    D. met with

16. A. love     B. feeling       C. music  D. touch

17. A. assistant       B. teacher       C. wife    D. student

18. A. him      B. engineering       C. herself       D. music

19. A. certainly      B. possibly     C. only    D. mainly

20. A. thought           B. hope     C. purpose      D. will

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：閱讀理解

If you travel around the world , you will be surprised to find just how different the foreign customs can be from your own .

A visitor to India would do well to remember that people there consider it impolite to use the left hand for passing food at table . The left hand is supposed to be used for washing yourself . Also in India , you might see a man apparently shaking his head at another and assume that he is disagreeing . But in many parts of India a shake of the head is a gesture that shows agreement of acceptance .

Nodding your head when offered a drink in Bulgaria is likely to leave you thirsty . In that country you shake your head to indicate “yes” —a nod indicates “no”. The Arabs are known for their hospitality . At a meal in countries on the Arabic Peninsula , you will find that any drinking vessel （容器，器皿）is repeatedly refilled as soon as you drink it up .

In Europe it is quite usual to cross your legs when sitting talking to someone , even at an important meeting . Doing this when meeting an important person in Thailand , however , could cause offence . It is too informal an attitude for such an occasion . Also when in Thailand you are not supposed to touch the head of an adult —it’s just not done . In Japan , it is quite usual for men to plan evening entertainments for themselves and leave their wives at home . In Europe such attitudes are disappearing .

Customs vary from country to country . Visitors may be at a loss as to what to do in a foreign environment . In such circumstances , the golden rule to follow is : When in Rome , do as the Romans do .

60．In which country , a left — hand is not welcomed ?         .

       A．Thailand B．India       C Arabic peninsula D．Bulgaria

61．In which country , if someone shakes his head at another , it shows that he agrees or accepts ?

            .

       A．Bulgaria B．Thailand C．China      D．Arabic Peninsula

62．Which of the following is impolite in Europe ?         .

       A．to cross your legs

       B．to touch the head of an adult

       C．That men plan evening entertainment and leave their wives at home

       D．To drain the glass in your hand

63．If you don’t know the customs in the country where you visit , the golden rule to follow is          .

       A．to do as the Romans do B．to do nothing

       C．to visit Rome only D．to do as the natives do

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源： 題型：閱讀理解

One topic is rarely mentioned in all the talk of improving standards in our schools: the almost complete failure of foreign-language teaching. As a French graduate who has taught for more than twenty-five years, I believe I have some idea of why the failure is so total.  21  the faults already found out in the education system as a whole — such as child-centred learning, the “discovery” method, and the low expectations by teachers of pupils — there have been several serious  22  which have a direct effect on language teaching.

The first is the removal from the curriculum (課程) of the thorough teaching of English  23 . Pupils now do not know a verb from a noun, the subject of a sentence from its object, or the difference between the past, present, or future.

Another important error is mixed-ability teaching, or teaching in ability groups so  24  that the most able groups are  25  and are bored while the least able are lost and  26  bored. Strangely enough, few head teachers seem to be in favour of mixed-ability school football teams.

Progress depends on memory, and pupils start to forget immediately they stop having 27  lessons. This is why many people who attended French lessons at school, even those who got good grades, have  28  it a few years later. Because they never need it, they do not practice it.

Most American schools have accepted what is inevitable and  29  modern languages, even Spanish, from the curriculum. Perhaps it is time for Britain to do the same, and stop  30  resources on a subject which few pupils want or need.

21. A. Due to                 B. In addition to       C. Instead of            D. In spite of

22. A. errors                  B. situations             C. systems               D. methods

23. A. vocabulary           B. culture                C. grammar             D. literature

24. A. wide                    B. similar                C. separate               D. unique

25. A. kept out               B. turned down        C. held back            D. left behind

26. A. surprisingly          B. individually         C. equally                D. hardly

27. A. extra                   B. traditional           C. basic                   D. regular

28. A. needed                 B. forgotten             C. practised             D. left

29. A. restored               B. absorbed             C. prohibited           D. withdrawn

30. A. wasting                B. focusing              C. exploiting            D. sharing

查看答案和解析>>

同步練習(xí)冊(cè)答案