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Many children may be fond of animals, but few ever think of making the study of animals their career(Ö°Òµ).Even fewer will be 1 by the whole world, 2 the title of United Nations Messenger(ʹÕß) of Peace.
But one woman has 3 all that. She has lived with chimpanzees in the African forest for more than 20 years and made great 4 .This woman is Jane Goodall. She was born in London, England, in 1934.Goodall¡¯s lifelong 5 in animals began at an early age. By the age of 10 or 11,Goodall 6 going to Africa to live with animals. This was quite a strange dream in those days, as young 7 didn¡¯t think of having such ¡°wild¡± actions. But she was 8 by her mother. She told her that if she really wanted something, she should work hard, take advantage of 9 and never give up looking for a way.
When a close friend invited Goodall to Kenya in 1957,she readily 10 .Within a few months of her arrival she met the famous anthropologist(ÈËÀàѧ¼Ò) Dr. Louis Leakey, who soon decided that Goodall was the 11 person he was looking for to begin a 12 of wild chimpanzees on the shore of Lake Tanganyika in Tanzania.
In July 1960, Goodall arrived at Gombe National Park in Tanzania. At the beginning, studying the chimpanzees was not 13 for her. The animals fled from her 14 , so it took months for her to get close to them. With a strong 15 , she searched the forest every day, trying not to get too close to the chimpanzees too 16 . Gradually the chimpanzees became used to her presence.
She discovered many things of chimpanzees during her first years at Gombe National Park. In October 1960,she observed a chimpanzee making and using 17 to fish for termites (°×ÒÏ).This discovery threw 18 on the popular idea at the time that Man was the world¡¯s only toolmaker. The longer Goodall¡¯s research continues, the more it becomes obvious that chimpanzees are very 19 to humans.
Since the mid-1980s, Goodall has been lecturing around the world to raise people¡¯s sense about environmental 20 . ¡°Let¡¯s live in the new age with hope, respect for all living things, understanding and love,¡± she said.
1.A. recognized¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡ B. known¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. accepted¡¡¡¡¡¡¡¡ D. admitted
2.A.receiving¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. giving¡¡¡¡¡¡¡¡¡¡¡¡ C. enjoying¡¡¡¡¡¡¡¡ D. having
3.A.done¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. proved¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. achieved¡¡¡¡¡¡¡¡ D. realized
4.A.discoveries¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. decisions¡¡¡¡¡¡¡¡ C. choices¡¡¡¡¡¡¡¡¡¡¡¡ D. findings
5.A.study¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. interest¡¡¡¡¡¡¡¡¡¡¡¡ C. sense¡¡¡¡¡¡¡¡ D. dream
6.A.was fond of ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. tired of¡¡¡¡¡¡¡¡¡¡¡¡ C. insisted on ¡¡¡¡¡¡¡¡¡¡¡¡ D. dreamed of
7.A.boys¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. girls¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. men¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. women
8.A.encouraged¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. prevented¡¡¡¡¡¡¡¡ C. advised¡¡¡¡¡¡¡¡¡¡¡¡ D. forced
9.A.knowledge¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. youth¡¡¡¡¡¡¡¡¡¡¡¡ C. hope¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. chances
10.A.accepted¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. refused¡¡¡¡¡¡¡¡¡¡¡¡ C. hesitated¡¡¡¡¡¡¡¡ D. considered
11.A.only¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. last¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. special¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. first
12.A.project¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. study¡¡¡¡¡¡¡¡¡¡¡¡ C. center¡¡¡¡¡¡¡¡¡¡¡¡ D. career
13.A.hard¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. interesting¡¡¡¡¡¡¡¡ C. easy¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. convenient
14.A.in surprise¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. in a hurry¡¡¡¡¡¡¡¡ C. as expected¡¡¡¡¡¡¡¡¡¡¡¡ D. in fear
15.A.will¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. body¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. desire¡¡¡¡¡¡¡¡¡¡¡¡ D. mind
16.A.far¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. near¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. soon¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. much
17.A.nets¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. tools¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. holes¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. spoon
18.A.doubt¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. light¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C. questions¡¡¡¡¡¡¡¡ D. beliefs
19.A.close¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. similar¡¡¡¡¡¡¡¡¡¡¡¡ C. friendly¡¡¡¡¡¡¡¡¡¡¡¡ D. helpful
20.A.improvement¡¡¡¡¡¡¡¡¡¡¡¡ B. protection¡¡¡¡¡¡¡¡ C. pollution¡¡¡¡¡¡¡¡ D. destruction
Trains were used for long distance transportation.
Today the car is the most 1 sort of transportation in all of the 2 .It has completely taken the place of the horse as a 3 of everyday transportation. The Americans use their cars for nearly 90 4 all their 5 .Most Americans are 6 to buy cars. The average(ƽ¾ù) 7 of a car was 2050 in 1950,2740 in 1960 and up to 4750 in 1975. During this period, American carmakers 8 improving their products. As a 9 ,the income of the average family 10 from 1950 to 1970 11 than the price of cars. 12 ,buying a new car takes a smaller part of a family¡¯s 13 income today. In 1951, it 14 8.1 months of an average family¡¯s income to buy a new car. In 1962,a new car 15 6.43 months of a family¡¯s income. By 1975,it 16 took 4.75 months¡¯ income. 17 ,the 1975 cars were technically 18 than those of the previous(ÏÈÇ°µÄ) 19 .
That¡¯s why cars are so 20 in the USA.
1.A.useful¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B.valuable¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C.cheap¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.popular
2.A.United States ¡¡¡¡¡¡¡¡ B.world ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C.year¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.continent
3.A.development¡¡¡¡¡¡¡¡ B.journey¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C.sign¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.means
4.A.percent¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B.years¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡ C.miles¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.dollars
5.A.trips¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B.lives¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C.buissness¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.time
6.A.permitted¡¡¡¡¡¡¡¡¡¡¡¡ B.encouraged¡¡¡¡¡¡¡¡¡¡¡¡ C.anxious¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.able
7.A.value¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B.cost¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C.price¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.money
8.A.suggested¡¡¡¡¡¡¡¡¡¡¡¡ B.enjoyed ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C.made up¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.started
9.A.tool¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B.result¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C.drive¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.producer
10.A.reduced¡¡¡¡¡¡¡¡¡¡¡¡ B.increased¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡ C.received¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.needed
11.A.more slowly¡¡¡¡¡¡¡¡ B.smaller¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C.faster¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.less
12.A.However¡¡¡¡¡¡¡¡¡¡¡¡ B.For example¡¡¡¡¡¡¡¡¡¡¡¡ C.Instead¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.For this reason
13.A.low¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B.high¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C.monthly¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.total
14.A.needs¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B.took¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C.spent¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.saved
15.A.spent¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B.paid¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡ C.cost¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.took
16.A.might ¡¡¡¡¡¡¡¡ B.really ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C.only¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.would
17.A.Otherwise ¡¡¡¡¡¡¡¡ B.Besides¡¡¡¡¡¡¡¡¡¡¡¡ C.But¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.Finally
18.A.improved ¡¡¡¡¡¡¡¡ B.better¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C.lighter ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.smaller
19.A.months¡¡¡¡ ¡¡¡¡ B.years ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C.cars¡¡¡¡ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.families
20.A.popular ¡¡¡¡¡¡¡¡ B.expensive¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ C.cheap ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D.good
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Learn to Smile
Smile is an attitude to life£®_________
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First I looked at some of the 6 discoveries. One of the earliest discoveries, the famous experiment that proved that bodies of different 7 fall at the same speed, was made by Galileo when he was 26. Madam Curie started her research that 8 to the Nobel Prize when she was 28. Einstein was 26 when he published his world-changing theory of relativity. Well, 9 of that. Yet I 10 if those¡°best years¡±were true in other 11 .
Then how about the field of 12 ? Surely it needs the wisdom of age to make a good leader. Perhaps it 13 ,but look when these people 14 their career. Winston Churchill was elected to the House of Commons at the age of 26. Abraham Lincoln 15 the life of a country lawyer and was elected to government. At what age? Twenty-six.
But why 16 best years some after thirty? After thirty, I 17 ,most people do not want to take risks or try 18 ways. Then I thought of people like Shakespeare and Picasso. The former was writing wonderful works at the ripe age of fifty, while the latter was 19 trying new ways of painting when he was ninety!
Perhaps there is still 20 for me.
1. A. invention¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. discovery
C. experiment¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. progress
2. A. mind¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. idea
C. attention¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. thought
3. A. As¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. Being
C. However¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. Beyond
4. A. Everybody¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. Somebody
C. Nobody¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. Whoever
5. A. names¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. ages
C. addresses¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. oldest
6. A. modern¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. scientific
C. last¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. oldest
7. A. heights ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. sizes
C. weights¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. things
8. A. led¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡ B. meant
C. stuck¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. referred
9. A. plenty¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡ ¡¡¡¡ B. enough
C. much¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. none
10. A. believed¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡ B. trusted
C. wondered¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. asked
11.A. fields¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡ B. countries
C. courses¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. ages
12. A. agriculture¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡ B. politics
C. industry¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. society
13.A. is¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡ B. will
C. has¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡ D. does
14. A. finished¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. went
C. started¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡ D. failed
15. A. devoted¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡ B. gave up
C. began¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. led
16. A. don¡¯t¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡ B. the
C. can ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. not
17. A. say¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ B. know
C. guess¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. agree
18. A. other¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡ B. new
C. best¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. their
19.A. always¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡ B. still
C. seldom¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. enjoying
20. A. discovery¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡¡¡ B. problem
C. wish¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ D. hope
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