【正文】 ture of basketball C. improve himself D. bee the captain of the Houston Rockets B The word“day”has two meanings. When we talk about the number of days in a year, we are using “day”to mean 24 hours. But when we talk about day and night, we are using “day”to mean the time between sunrise and sunset. Since the earth looks like a ball, the sun can shine on only half of it at a time. Always one half of the earth is having day and the other half night. A place is moved from day into night and from night into day over and over by the spinning （旋轉(zhuǎn)） of the earth. At the equator（赤道） day and night are sometimes the same length（長度） . They are each twelve hours long. The sun rises at 6 o’ clock in the morning and sets at 6 o’ clock in the evening. For six months the North Pole is tilted （傾斜） toward the sun. In those months the Northern Hemisphere（半球） gets more hours of sunlight than the Southern Hemisphere. Days are longer than nights. South of the equator nights are longer than days. For the other six months the North Pole is tilted away from the sun. Then the Southern Hemisphere gets more sunlight. Days are longer than nights. North of the equator nights are longer than days. Winter is the season of long nights. Summer is the season of long days. ( )31. When the Western Hemisphere is having day, the Eastern Hemisphere is having _________. A. both day and night B. day C. neither day nor night D. night ( )32. A place is moved from day into night and from night into day over and over by ______ of the earth. A. the pushing B. the pulling C. the spinning D. the passing ( )33. At the equator day is as long as night ______. A. sometimes B. never C. usually D. always ( )34. When the North Pole is tilted toward the sun, the Northern Hemisphere gets _________ sunlight. A. less B. more C. all D. no ( )35. When it is winter in China, ________. A. the USA is tilted toward the sun B. the South Pole is tilted away from the sun C. the North Pole is tilted toward the sun D. the North Pole is tilted away from the sun C Different from popular thoughts , colds are not caused by bad weather . Colds are caused by viruses （病毒） in the body , and you are better out on the snowy day than you are in a warm room , with your friends , who just may be passing the virus around . If you feel a chill（寒戰(zhàn)） when you are ing down with a cold , you are already sick . A chill is an early sign of the cold. The virus can spread through air when a coldsufferer （感冒患者） coughs or sneezes （打噴嚏） . Surprisingly , this is not the most usual way of spreading . Many studies have now shown that most colds are “ caught” by hands . A coldsufferer rubs her nose , so spreading the virus to her hand . Then a friend es to visit her . They shake （握） their hands . The friend then gets something to eat by hand , and several days later she catches a cold . Although some parents pick up their children’ s tissues （紙巾） and carefully throw them away , they fail to wash their hands . They’ll catch the colds , too. Cold viruses can also be spread by objects , for example , telephones , plates . The coldsufferer as well as other members of the house , by washing their hands often , will stop the viruses from spreading in a way. 根據(jù)短文內(nèi)容，選擇最佳答案。 ( )1. － You look so beautiful in blue. － _____________. A. That’s all right B. Thank you C. Not at all D. I don’t know ( )2. Nearly three quarters of the earth _______ covered with water. A. has B. have C. is D. are ( )3. My brother does well in all his lessons. His wish to bee a college student is sure to _____. A. e out B. e nea r C. e true D. e on ( )4. I kept ______ phone calls to my frie