阅读下面短文，从短文后各题所给的四个选项（A、B、C、和D）中，选出可以填入空白处的最佳选项。

         Have you ever had problems in your life and don’t know how to be happy? If                16  , you will find “Being a Happy Teenager” written by an Australian writer, Andrew Matthews,  17  .In his book, Matthews  18  us how to have a happy life and answers the  19   of teenagers.

　　 Many people may    20     teenagers’ life, such as parents and friends, and the book    21   that we should stop being angry and forgive. The book tells us of useful skills,    22   how to change what you have learned into pictures of your mind to   23  your memory better.

　　 Many teenagers think    24   happiness comes from either a good exam result   25  praise (赞扬) from other people. But you can   26   be happy when there are no such “good” things.

　　 Success also comes from a   27   attitude. If you   28   from problems, you will have success in the future. Some students may often feel     29     when they are too tall or too short. But Matthews tells us that   30   comes from thinking about things in a positive   31   . If you are   32   , people notice you and you can get a   33   view(视线) of what is around you; if you are short, your clothes and shoes   34  less space in your bedroom! This is Matthews’ most important   35   : you choose to be happy!

1.A. so                B. such                 C. it               D. this

2.A. easy               B. funny           C. useful              D. simple

3.A. orders                        B. tells                       C. asks                 D. allows

4.A. questions                  B. problems             C. ideas                D. comments

5.A. impress                       B. cause                             C. effect                        D. affect

6. A. suggests                   B. writes                   C. reads               D. asks

7.A. for example              B. such as                  C. for instance          D. as before

8.A. make                          B. have                 C. take                       D. get

9.A. what                      B. which                    C. that                       D. whether

10.A. and                           B. but                   C. so                     D. or

11.A. never                        B. already            C. still                        D. forever

12.A. confident           B. positive           C. common             D. normal

13.A. learn                        B. suffer                        C. hear                     D. separate

14.A. frightened         B. shocked          C. confused              D. worried

15.A. attitude                   B. intelligence    C. failure     D. altitude

16. A. way                          B. route               C. style                      D. spirit

17.A. short                        B. small                C. tall                     D. fat

18.A. longer                      B. higher              C. bigger                   D. better

19.A. take up                      B. put up              C. set up                   D. break up

20.A. class                         B. lesson              C. education            D. advantage

Einstein”s IQ =160 + What about yours?

 Intelligence Quotient

I.Q. stands for “Intelligence Quotient” which is a measure of a person's intelligence found by means of an intelligence test. Before marks gained in such a test can be useful as information about a person, they must be compared with some standard, or norm（规范）. It is not enough simply to know that a boy of thirteen has scored, say, ninety marks in a particular test. To know whether he is clever, average or dull, his marks must be compared with the average achieved by other boys of thirteen in that test.

In 1906 the psychologist, Alfred Binet （1857--1911）, devised the standard by which intelligence has since been assessed．Binet was asked to find a method of selecting all children in the schools of Paris who should be taken out of ordinary classes and put in special classes for defectives. The problem brought home to him the need for a standard for measuring intelligence, and he hit upon the very simple concept of “mental age”.

First of all, he invented a variety of tests and put large numbers of children of different ages through them. He then found at what age each test was passed by the average child．For instance, he found that the average child of seven could count backwards from 20 to 1 and the average child of three could repeat the sentence:" We are going to have a good time in the country ."Billet arranged the various tests in order of difficulty, and used them as a scale against which he could measure every individual. If, for example, a boy aged twelve could only do tests that were passed by the average boy of nine, Binet held that he was three years below average, and that he had a mental age of nine.

The concept of mental age provided Binet, and through him, other psychologists, with the required standard．It enabled him to state scores in intelligence tests in terms of a norm merely by subtracting（减去） the “mental” age of a child from his “chronological” age. Then the boy in the example given would be 'three years retarded'（迟缓、耽误）. Later the “mental ratio” was introduced; that is to say, the ratio of the mental age to the chronological age. Thus a boy of twelve with a mental age of nine has a mental ratio of 0.75.

The “mental age” measurement was then replaced by the more famous I.Q.（intelligence quotient）

1．To judge a child' s intelligence, his marks in a test must be compared with marks gained by _ _____________.

      A．others of the same age

B．children of different ages

      C．a number of children aged thirteen

      D．the same child at different ages

 2．The word “defective” refers to ________.

      A．average children                                      B．poor children 

C．children of low intelligence                      D．very intelligent children

 3．Binet used a large number of children in his tests because he wanted to find out________. 

      A．who were the most stupid                  B．the defectives

      C．what a bright child could do                D．a norm

 4．The purpose of I.Q. test is to find out ______________. 

      A．whether one has the intelligence of thirteen-year-old children 

      B．whether one is clever, average or dull

      C．whether one is mature enough for his age

      D．whether one is tall enough for his age

5．The I.Q. is___________________.

     A．the mental age divided by the chronological age and multiplied by a hundred

B．the mental age multiplied by the chronological age and divided by a hundred

     C．the chronological age divided by mental age and multiplied by a hundred

     D．the average age divided by the mental age and multiplied by a hundred．

 If your idea of a good time is to sleep in a hut, carry your own rubbish, and eat insects and wild animals, then ecotourism may be just for you. But is it also for people who want to fly over a rainforest sky before checking into a comfortable and expensive hotel in the middle of a national park? Whatever ecotourism is, it is hot--perhaps too hot for its own good.

The World Tourism Organization claims that the industry looked after 592 million travelers last year who spent $423 billion, and of all the types of tourism, ecotourism seems to be the fastest growing. By the broadest measure -- a trip with some sort of nature or wilderness element -- ecotourism already accounts for perhaps a third of these travelers. On a stricter definition favored by the Ecotourism Society, it is “responsible travel that preserves natural environments and keeps up the well-being of local people,” which accounts for no more than 5% of tourism.

Ideally, ecotourism helps both people and nature. Before the disastrous civil war, Rwanda’s Mountain Gorilla Project was one such model. Visits to the gorillas were limited, local guides ensured good behavior or on the part of the humans, and the high admission charge - $170 a day -- paid for salaries and presentation of the gorillas’ living areas. As this made the gorillas worth more alive than dead, poaching (偷猎) decreased. As another example, preservation Cooperation, Africa’s largest ecotour operator, uses only local labor, buys products 5om local farmers, and supports building projects: such as clinics and schools. This contribution to social advance is also good business sense. Projects from which local people benefit directly are less likely to be affected by poaching and theft.

Ecotourism’s biggest problem is labeling. Going on an eco-tour is no guarantee of good ecology. So far, only Australia has an official system to grade tour operators and tourist attractions on the basis of their “greenness”. Another issue is how eco-tourists damage the environment. Dolphin-feeding, for instance, is innocent and enjoyable, but after too many free meals, the dolphins forget how to catch their own dinners.

Keeping prices high is one way to limit enthusiasm. But measuring the effect of ecotourism on human environments is trickier. It is common, for villagers to see ecotourism as a source of new income. Hence, the very tourists who venture in search of traditional cultures end up breaking them up. As ecotourism becomes more popular, it will finally threaten the very things that are good for business.

1.According to the passage, ecotourism may _________.

A. harm its own purpose by becoming too popular

B. save the environment by becoming more popular

C. harm its own purpose by becoming less popular

D. save the environment by becoming less popular

2.Within the tourism industry as a whole, ecotourism _____________.

A. has no single, clear definition that would satisfy everybody

B. has expanded less rapidly than other types of tourism

C. claims that no comfortable hotels should be used by tourists

D. most often has a negative effect on local culture

3.Rwanda’s Mountain Gorilla Project is a good example because ___________.

A. tourists were free to visit the gorillas whenever they wanted to

B. local people’s attitudes toward animals were not affected

C. the gorillas were protected from both tourists and local people

D. the gorillas’ living area was modernized because of the high admission

4. _________ most directly benefits the local community.

A. Rwanda’s Mountain Gorilla Project            B. Preservation Corporation

C. Australia’s grading system                            D. Dolphin-feeding