问题
选择题
地球表面的陆地面积约为
A．5．1亿平方千米
B．40000平方千米
C．1．5亿平方千米
D．3．6亿平方千米
答案
C
题目分析：经过测量，地球的极半径为6357千米，赤道半径为6378千米，地球的平均半径为6371千米，地球表面积为5.1亿平方千米，最大周长约4万千米。
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地球表面的陆地面积约为
A．5．1亿平方千米
B．40000平方千米
C．1．5亿平方千米
D．3．6亿平方千米
C
题目分析：经过测量，地球的极半径为6357千米，赤道半径为6378千米，地球的平均半径为6371千米，地球表面积为5.1亿平方千米，最大周长约4万千米。
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| One man was to meet his wife downtown and spend some time shopping with her. He waited patiently for 15 minutes. Then he waited impatiently for 15 minutes more. After that, he became 1 . When he saw a photograph booth (照相亭) nearby, he had 2 . He wore the most unhappy expression he could manage, which was not 3 in the situation. In a few moments, he was holding four small prints that shocked even him. He wrote his wife's name on the back of the photos and handed them to a clerk behind the desk in the booth." 4 you see a small, dark lady with brown eyes and an apologetic expression, obviously 5 someone, would you please give her this?" he said. He then returned to his office in Morrison Building, 6 that if a picture is worth a thousand words, then the four photos must be a good lecture! He sat down with a smile. His wife 7 those pictures. She carries them in her purse now and shows them to anyone who asks if she is married … How are you with patience? One person calls it "wait training." It seems that there is always something we are waiting for. We wait on traffic and we wait in lines. We wait to hear about a new job. We wait to complete school. We wait for someone to change his or her mind. Patience is an important quality of a happy and rewarding life. 8 , some things are worth waiting for. Every day presents many opportunities for wait training. We can hate waiting, 9 it or even get good at it! But one thing is 10 —we cannot avoid it. How is your wait training coming along? | ||||
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