Every country had its heroes. The heroes are the people that nation and especially the young people 21_____ . If you get a list of the 22 _____of a nation, it will tell you the potential (潜力）of the nation.
If today in America ’ you ask the high school students to list their heroes their 23____ would probably divide into three groups. rHie first group of heroes would be the rock stars—the people 24 _____with rock music. There is no doubt that such people do have talent (天才）but one 25_____ if one should hold up rock stars as model. The rock stars too often are mixed with drugs and their personal life isnot all that — 26 ____ . The rock stars are rich and wear the latest fashion styles (时装）.However oneshould 27 _____more in a hero than such things as 28______ and fine clothes.
A second type of heroes for the American youth are sports stars. Again you have a person who has a great talent in one area_ 29 _____. However, too often the personal life of the sports star is a bit 30_____. Too frequently drugs and drinking are a part of 31_____ of the sports stars.
A third group of heroes are TV or movie stars. These people may have lots of 32___ ，talent and are quite handsome. However ’ the personal life of too many actors is quite sad and should not be held up as a 33____ for young people.
Today，the rock stars，the sportsmen and the actors 34____ have become the models of the youth in America. Really,do you hear a young person say that his 35____ is a doctor, a teacher or a scientist? These people are not 36____ and do not wear fashionable clothes. However, they are 37____ people who work hard to make the world a better place for everyone.
What is really sad is that the young try to 38____ their heroes. They like to wear the same clothes as theirs, if the heroes of today for the American youth are 39 ____only to rock stars, sportsmen and actors, the future does not look too 40_____ .
| 小题1: | | A．dislike | B．admire | C．hate | D．satisfy |
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| 小题2: | | A．doctors | B．soldiers | C．teachers | D．heroes |
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| 小题3: | | A．choice | B．conclusion | C．answer | D．questions |
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| 小题4: | | A．interested | B．connected | C．excited | D．pleased |
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| 小题5: | | A．wants | B．hopes | C．wonders | D．expects |
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| 小题6: | | A．bad | B．simple | C．silent | D．good |
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| 小题7: | | A．gather | B．spend | C．put | D．be after |
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| 小题8: | | A．paper | B．money | C．food | D．book |
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| 小题9: | | A．sports | B．music | C．movie | D．teaching |
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| 小题10: | | A．regular | B．disorder | C．happy | D．hard |
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| 小题11: | | A．sports | B．life | C．clothes | D．talent |
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| 小题12: | | A．teaching | B．running | C．acting | D．pretending |
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| 小题13: | | A．model | B．example | C．lessor | D．education |
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| 小题15: | | A．parent | B．husband | C．wife | D．hero |
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| 小题16: | | A．rich | B．poor | C．healthy | D．kind |
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| 小题17: | | A．stupid | B．talented | C．terrible | D．weak |
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| 小题18: | | A．persuade | B．praise | C．remember | D．follow |
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| 小题19: | | A．enough | B．limited | C．powerful | D．great |
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| 小题20: | | A．bright | B．usual | C．necessary | D．important |
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cm的圆形区域内，有一个水平方向的匀强磁场，磁感应强度大小为B2=0.1T，方向垂直纸面向外。M、N为竖直平行放置的相距很近的两金属板， S1、S2为M、N板上的两个小孔，且S1、S2跟O点在垂直极板的同一水平直线上。金属板M、N与一圆形金属线圈相连，线圈的匝数n=1000匝，面积S=0.2m2，线圈内存在着垂直纸面向外的匀强磁场，磁感应强度大小随时间变化的规律为B1=B0+kt（T），其中B0、k为常数。另有一水平放置的足够长的荧光屏D，O点跟荧光屏D之间的距离为H=2R。比荷为2×105 C/kg的正离子流由S1进入金属板M、N之间后，通过S2向磁场中心射去，通过磁场后落到荧光屏D上。离子的初速度、重力、空气阻力及离子之间的作用力均可忽略不计。问：