小明家距学校3600m,他步行上学的平均速度约为1.2m/s。小明改骑自行车后,

题型:计算题

问题:

小明家距学校3600m,他步行上学的平均速度约为1.2m/s。小明改骑自行车后,上学时间平均少了38min。

求:(1)小明步行上学所用的时间。

(2)小明骑自行车上学的平均速度是多少米/秒?

考点:比较快慢的方法
题型:计算题

根据短文内容和首字母提示,补全文中单词.。

     All a __1__ the world, people drink tea. But tea doesn't mean the same thing to everyone. In different

 countries people have very d__2__ ideas about drinking tea.

     In China, for example, tea is always served w__3__ people get together. The Chinese drink it at any

  time of the day at h __4__ or in tea houses. They prefer their tea plain, with nothing e__5__ in it.

     Tea is a __6__ important in Japan. The Japanese have a special way of serving tea c __7__  a  tea

 ceremony (茶道). It is very old and full of meanings. Everything must be done in a special way in the

 ceremony. There is even a special room for it in J__8__ homes.

     A __9__ tea-drinking country is England. In England, the late afternoon is "teatime".  Almost everyone

  has a cup of tea then. The English usually make tea in a teapot and drink it w __10__ cream and sugar. They also eat cakes, cookies and little sandwiches at teatime.

题型:计算题

已知圆的半径为6.5cm,圆心到直线l的距离为4cm,那么这条直线l和这个圆的公共点的个数有______个.

题型:计算题

关于双子宫,下列说法恰当的是

A.双子宫常出现月经过多

B.双子宫是由双侧副中肾管未完全融合所致

C.每个子宫伴有一个宫颈和一对输卵管及卵巢

D.妊娠只能发生在一个宫腔内

E.早期人工流产时可能造成漏吸

题型:计算题

MRI技术的产生和发展与下列哪些因素有关()

A.核素扫描技术的进展

B.物理学领域发现磁共振现象

C.电子计算机技术的进展和成果

D.图像重建数学的进展和成果

E.X线体层摄片技术的进展

题型:计算题

教师通过口头语言系统连贯的向学生传授知识的方法是()。

A.谈话法

B.演示法

C.讨论法

D.讲授法

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