问题 选择题

非洲和南美洲的轮廓和生物相似的特征证明了(     )

A.海底扩张学说

B.大陆漂移学说

C.板块构造学说

D.地质力学

答案

答案:B

题目分析:大陆漂移假说——海陆变迁最具代表的理论,德国—魏格纳提出的;依据是非洲和南美洲大陆轮廓线吻合;物种相近;古老地层吻合。

点评:本题还可以考查地球上的海洋和陆地是时刻都在变化着的。“沧海桑田”举例:①喜马拉雅山仍不停升高,陆地上的海洋生物化石(原因是地壳运动);②在我国东部海底发现古河流的遗迹(原因是海平面升降);③A欧洲荷兰的围海造田(原因是人类活动); 大陆漂移假说理论:大约在2亿年前,地球上各大洲是连接的一块大陆,周围为海洋,然后慢慢分离。地壳的板块结构:(1)六大板块:名称、位置、范围、背图(2)大部分板块与大陆、大洲、大洋的范围一致。注意:亚欧大陆的阿拉伯半岛、印度半岛不在亚洲板块上而在印度洋板块上;亚欧大陆的东北角不在亚欧大陆而在美洲板块上,只有太平洋板块为唯一的大洋板块。板块内部比较稳定,板块与板块交界处比较活跃,世界上两大地震带:①太平洋沿岸地带;②地中海——喜马拉雅山一线;应用:①红海不断扩大:印度洋板块与非洲板块的张裂运动;②地中海在不断缩小:亚欧板块与非洲板块碰撞运动;③喜马拉雅山的形成、珠穆朗玛峰的不断升高:亚欧板块与印度洋板块碰撞运动;④日本、台湾多地震:亚欧板块与太平洋板块的碰撞运动;⑤太平洋不断缩小:太平洋板块的周边板块向其作碰撞挤压运动

完形填空
Two runners stand side by side at the starting line of a race.  36   look very strong and fast.  37 one runner speeds ahead and wins the race.The other __38__.
Some athletes can reach great   39  such as winning an Olympic gold medal.Others never live up to their  40 .What kind of preparation before a race or before other kinds of events makes the   41 ?    
Everyone knows that athletes try to   42  their bodies.But research shows that strengthening the mind may be just as   43 .Careful study indicates that the best athletes win  44  because they think they can win.
Positive thoughts seem to provide the edge for   45  in sports.People who say "I know I can do this" to themselves over and over   46  find that they have the advantage to win.On the other hand, people who think "I can't win" often   47 
One procedure that helps many athletes is creating   48  in their mind.They are told to think of each jump they must make to   49 .Some use pictures that are more fanciful.One skater liked to think about a star bursting inside her,  50  her with energy.Another athlete who wanted to feel   51  pictured himself as a bird floating in the air.
Next time you want to do something well.try training your   52  to help you.Perhaps a teacher or other instructors can   53  you plan your training.If you imagine yourself doing better, you may soon see improvements in   54  you really can do.Positive thinking and pictures   55  in your mind can help you win!
小题1:
A.NeitherB.AllC.EachD.Both
小题2:
A.ButB.SoC.OrD.And.
小题3:
A.falls downB.leaves behindC.leaves aloneD.falls behind
小题4:
A.prizesB.goalsC.medalsD.places
小题5:
A.promiseB.nameC.levelD.ability
小题6:
A.progressB.mistakeC.achievementD.difference
小题7:
A.determineB.expandC.strengthenD.extend
小题8:
A.possibleB.interestingC.difficultD.important
小题9:
A.partlyB.entirelyC.completelyD.mostly
小题10:
A.failureB.luckC.successD.competition
小题11:
A.oftenB.neverC.hardlyD.rarely
小题12:
A.failB.succeedC.understandD.expect
小题13:
A.ideasB.thoughtsC.wondersD.pictures
小题14:
A.failB.runC.winD.go
小题15:
A.givingB.helpingC.takingD.tiring
小题16:
A.encouragedB.calmC.excitedD.anxious
小题17:
A.mindB.bodyC.brainD.imagination
小题18:
A.help B.adviseC.allowD.persuade
小题19:
A.whichB.thatC.whatD.how
小题20:
A.madeB.hungC.discoveredD.created
单项选择题