完形填空。

　　The year 1970 　　1　　 World Conservation Year．Everyone must know that the world is in danger．Here is one example of the 　　2　　．At one time there were 1,300 different kinds of trees and flowers in Holland, but only 866 remains．Some have been destroyed by modern man．We are changing the earth, the air and the water, and 　　3　　 that grows and lives．If we go on 　　4　　 this, we shall destroy ourselves．

　　What will happen in the future? Perhaps it is 　　5　　 to ask “what must we do now?” The people who will be living in the world tomorrow are the young of today．A lot of them know that conversation is necessary．Many are helping to save our world．Now fifteen million young people in many countries are 　　6　　 attention to the relationship 　　7　　 men and the country around them．In some countries, they 　　8　　 much time as “conservation volunteers”．They plant trees and help to protect wild birds and animals．

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閱讀理解

　　Many students get a driver's permit at 15．In California, they are then allowed to drive for 50 hours under supervision．"Under supervision" means that a friend or relative who already has a license has to ride with them．But what happens when teenagers(persons between 13 and 19 years old)start driving on their own?Many are careful drivers and never have a problem．But many other are not, and they create(造成)Problems on the road．Fifteen-year-olds are too young to drive, and sixteen-year-olds are too immature(不成熟的)to start driving alone．

　　In the United States, more teenagers are killed in driving accidents than in any other way．While fewer than 7％ of drivers are teenagers, teenagers are involved(占，包括)in 14％ of the terrible car accidents in the country．Sixteen-year-olds involved in over 43 crashes in every million kilometers they drive．But seventeen-year-olds cause only about 30 accidents a million kilometers of driving．One year makes a difference．So the age limit(限制)should be increased．

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It was autumn again．The leaves had turned yellow and begun to fall．On a lovely autumn day, my friends and I went back to our old school．Standing at the gate, I looked around the campus(校園)．The school looked 　　1　　 the same as before．The classrooms were still big and bright．The playground was still full of basketball players．Yet deep in my heart．I knew 　　2　　 was different．On our way to our old classroom．we met some of our former classmates．We 　　3　　 up to the group and tried to join their talk．But I was sorry to 　　4　　 that we were no longer interested in the same things．They 　　5　　 about a campus football match．We were more worried about the mid-term examination．　　6　　 the talk．I realized we had all changed．We no longer had things in common．I remembered when we were in the same class we shared jokes and 　　7　　．But those days had gone and would never return．Before I walked out of the school gate．I 　　8　　 and looked around．The sun shone brightly over the school’s orange trees．Suddenly I saw a big yellow orange 　　9　　 a lot of green ones．I knew it was getting ripe(成熟)．Yes, 　　10　　 is not always bad．Sometimes it brings hopes．

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　　In the 1930s, a lot of people in the USA were out of work．Among these people was a man named Alfred Butts．He always had an interest in word games and so, to fill his time, he planned a game which he called “Lexico”．However, he was not completely satisfied with the game, so he made a number of changes to it and, in time, changed its names from “Lexico” to “Alph” and then to “Criss Cross”．He wanted to make some money from his new game but he didn’t have any real commercial(商業(yè)的)success．

　　In 1939, Butts happened to meet a man called Jim Brunot who showed an interest in the new game．The two worked together on developing the game and in 1948 it was offered for sale in the United States under its new name ——“Scrabble”．

　　At first, it didn’t sell very well．In the first year it sold just 2250 sets and by 1951 it had only reached 8500 sets a year．

　　Then, in 1952 the manager of Macy’s department store in New York, Jack Strauss, happened to play “Scrabble” while he was on holiday．He thought it was a wonderful game and, when he went back to work after his holiday, he insisted that Macy’s should stock(儲(chǔ)備)the game and make an effort(努力)to call the public’s attention to it．

　　As a result, “Scrabble” became a big success in the United States and it soon spread to Australia and then to other English-speaking countries．

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