C£®encouraging D£®none of the above
C
For thousands of years, we have looked for ways to measure time. Early humans found that the regular movements of the sun, the earth, the moon and the stars made good ways to measure time. The rising and setting of the sun were used to distinguish day from night.
But, eventually, people needed to tell time more accurately, or exactly. So, by using the sun's position in the sky, they divided the day into dawn, morning, midday and evening.
Then it was noted that the sun cast a changing shadow as it moved across the sky. Time could be told more accurately by setting up a stick and making the positions of the sun's shadow. It was the ancient Greeks£¨¹ÅÏ£À°ÈË£©who divided each position of this \ÈÕ)\doesn't always shine. So far the past 6,000 years, many other ways of keeping time have been tried. Slow-burning candles were divided into hours, and the hourglass was invented. When all the sand in the top of an hourglass has shifted£¨¹ýÂË£©£¬ to the bottom, an hour has passed.
Later, the pendulum(ÖÓ°Ú), with its regular back-and-forth movement of weights, was used to move the hands on a clock pendulums are still used in grandfather clocks.
Today, even more accurate clocks are in use, such as battery-operated quartz clocks, digital clocks and clocks run by electrical turning forks£¨Òô²æ£©and tiny atoms£¨Ô×Ó£©. These atomic clocks are the most accurate clocks ever invented. The exact time can be kept to within one second a century. 49£®When something is very exact, it is said to be __________.
A£®slow
B£®accurate
C£®fast
D£®of poor quality
50£®Humans in the old days used ________to tell day from night.
A£®the rising and setting of the sun C£®atomic clocks
51£®A sundial works by __________.
A£®tracking the movement of the stars around the sun B£®marking a shadow cast by the moving sun C£®burning candle in the sunlight D£®watching the stars
52£®Which of the following was NOT used in the past to measure time?
A£®An hourglass. B£®A sundial.
C£®Digital clocks. D£®A pendulums.
B£®battery-operated quartz clocks
D£®digital clocks
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Albert Schweitzer was a very great man. Born in France, he learned to play the piano at the age of five and became a very good musician.
when he was 30 years old£¬he decided to be a doctor. Then he studied medicine for eight years. In 2018, with big boxes of medicine , he went to Africa and became a jungle doctor. It was really a hard job. He had to go through a lot of dangerous places. As first, he was not welcome, but soon the African people understood that he was their friend, and helped him build his first small hospital near a river. Many people came to the hospital. Dr. Schweitzer worked day and night. He was delighted to help those people.
When he ran out of money and needed more medicine, he would make money by playing music. He spent most of his life in Africa, not only helping sick people but also teaching the people how to help each other. In 2018, he won the Nobel Peace Prize.
Albert Schweitzer Birthplace In 53 £® Education He learned to play the piano when he was five. He studied 54 for eight years. Experience ¡ñAt first he was not 55 , but soon the African people understood In Africa him and helped him. ¡ñHe helped sick people and taught the people how to 56 . Honor In 2018, he got the 57 . µÚÈý½Ú »Ø´ðÎÊÌ⣨¹²3СÌ⣻ÿСÌâ2·Ö£¬Âú·Ö6·Ö£©
ÔĶÁÏÂÃæ¶ÌÎÄ£¬¸ù¾ÝµÚ58ÖÁµÚ60СÌâµÄ¾ßÌåÒªÇ󣬾¡¿ÉÄܼòÒª»Ø´ðÎÊÌ⣬²¢½«´ð°¸×ªÐ´µ½´ðÌ⿨ÉÏ¡£ Jeremy Lin is an American professional basketball player on the New York Knicks£¨Äá¿Ë˹¶Ó£©of NBA. He has recently got the world¡¯s attention.
Lin was born in 2018 in America. In 2018, he graduated form Harvard University. In late 2018, he spent less than two weeks with the Houston Rockets, and then moved to the New York Knicks at the very end of the year.
Lin grows up with American education and culture. However, many Chinese fans take him as a Chinese or at least they are willing to imagine him as a Chinese. That¡¯s just because he has a Chinese face and his parents were born in China.
To most Chinese people, they hope to have another Chinese super star in NBA after YaoMing. Jeremy Lin¡¯s appearance gives them a great chance. So they are willing to be crazy about him.
Jeremy Lin¡¯s story is encouraging many Chinese young people to go on with their dreams. We hope he will be more excellent!
58£®What is Jeremy Lin?£¨»Ø´ð´ÊÊý²»³¬¹ý8¸ö£©
59£®When did Lin become a player of the New York Knicks?£¨»Ø´ð´ÊÊý²»³¬¹ý7¸ö£©
60£®What can Chinese young people learn from Jeremy Lin¡¯s story?£¨»Ø´ð´ÊÊý²»³¬¹ý15¸ö£©
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After decades of destroying nature and using up natural resources, 61. many developed nations are now paying attention to saving nature. However, many poorer nations must focus on meeting the everyday needs of their people. In doing so. 62. they are using up natural resources at a fast pace. They have not yet seen the effects of the careless use of the environment like many wealthy nations have. 63. ËûÃÇÍùÍùûÓÐÒâʶµ½ËûÃǵÄÑ¡ÔñÓꦻ·¾³. Should they be blamed for destroying hundreds of thousands of acres of rainforest if it means a better income for their people? 64. ÊÀ½çÉÏ·¢´ï¹ú¼ÒºÍ·¢Õ¹Öйú¼ÒÐèҪͨÁ¦ºÏ×÷, so that they make sure that people enjoy healthy and happy lives, 65. without the environment around them suffering. µÚ¶þ½Ú Çé¾°×÷ÎÄ£¨¹²1СÌ⣬Âú·Ö15·Ö£©
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Whether to Have a Laptop for Freshmen Supporters: * get a laptop as an award for their great efforts and achievements. * bring more convenience to their studies and easier access to the Internet. Opponents: * add the financial burden to some families. * make full use of the computers in the university. Whether to Have a Laptop for Freshmen
Is it necessary for freshmen to have a laptop when they go to university? Different people have
different ideas.