关于自由落体运动,正确的说法是() A.自由落体运动是一种匀变速运动 B.自由落体的

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问题:

关于自由落体运动,正确的说法是()

A.自由落体运动是一种匀变速运动

B.自由落体的快慢与物体质量的大小有关

C.在地球表面上各处,重力加速度大小相同

D.物体只在重力作用下,在竖直方向上向下的运动就是自由落体运动

考点:高中物理自由落体运动自由落体运动题库
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为抑制海浪干扰,异频双雷达系统应选用()雷达。

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There are one billion homeless people living in our world today . The Homeless World Cup exists to end this , so we all have a home , a basic human need .

The Homeless World Cup is an annual , international football tournament(锦标赛) , uniting teams of people who are homeless to take a once in a lifetime opportunity to represent their country and change their lives forever . It has inspired and supported over 50 grass roots(基层的) football projects around the world working with homeless people throughout the year .

The first tournament took place in Graz 2003 uniting 17 national teams . At the 5th Homeless World Cup in Copenhagen in 2004 , 48 nations , 500 players were united for a once in a lifetime opportunity to represent their country . 25,000 players were involved in pre-tournament training and trials around the world .

The Homeless World Cup is full of players with courage , spirit and determination . Research shows that 73% of players change their lives for the better after the international tournament by coming off drugs and alcohol , moving into jobs , education , homes , training , reuniting with families and even going on to become players and coaches for professional or semi-professional football teams . David Duke (Scotland) played in 2004 , came off alcohol , passed his coaching qualifications(资格) . He became assistant coach for Scotland 2005 , coach in 2006 and now owns his own home . The best goal scorer in 2004 Yevgen Adamenko(Ukraine) went on to play in a professional club in Ukraine .

The Homeless World Cup supporters include Nike , UN , Manchester United , Real Madrid and international footballers Didier Drogba and Rio Ferdinand .

小题1:The purpose of the Homeless World Cup is to       .

A.find a home for homeless people

B.collect money for homeless people

C.help the homeless kick bad habits

D.help the homeless start a new life小题2:Which of the following statements is true about the Copenhagen Homeless World Cup ?

A.It took place in early December .

B.25,000 players entered the tournament .

C.Nearly 50 teams competed in the tournament .

D.David Duke won the best goal scorer in 2004 .小题3:Why does the writer give the examples of Yevgen Adamenko and David Duke in Paragraph 4 ?

A.To attract people to join the Homeless World Cup .

B.To show the influence of the Homeless World Cup .

C.To show the popularity of the Homeless World Cup .

D.To inspire people to support the Homeless World Cup .小题4:The underlined words “ coming off ” in Paragraph 4 can be replaced by “     ” .

A.giving up

B.falling in

C.cutting off

D.looking down

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花模拟昼光分级室的光源照明质量要求,相关色温为()±200K,一般显色指数不低于92。

A、7500K

B、6500K

C、7000K

D、6000K

题型:单项选择题

老子说:“人法地,地法天,天法道,道法自然。”这表明()

A.人可以利用和改变客观规律

B.人为事物的联系没有客观性

C.联系具有普遍性和多样性

D.任何事物之间都相互联系

题型:单项选择题

综合布线区域内存在的电磁干扰场强大于()V/m时,应采取防护措施。

A.1

B.2

C.3

D.4

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