问题 填空题

夏天人们在大树下乘凉,形成乘凉的范围实际上是大树的______,其原因是______;我们在树下还可以看到一些圆的光斑,这些光斑是由于______而形成的______.

答案

太阳光被树叶遮挡后,在下边形成一个黑色的区域,形成阴凉实际上就是大树的影子,是光在同种均匀介质中沿直线传播形成的;

树阴下的地面上出现的圆形光斑,是太阳光通过浓密的树叶中的小孔所成的太阳的像,是实像,是由光的直线传播形成的.

故答案为:影子;光在同种均匀介质中沿直线传播;光的直线传播;太阳的实像.

阅读理解

阅读理解。

     It was 6:00 on a Monday morning. With his books in his bag, 13-year-old James MWangi was on his

way to school, the Mcedo-Beijing school in a slum (贫民窟) in the Kenyan capital of Nairobi (肯尼亚首都

内罗毕). This school was built in 2001 with the help of China, for children from poor families.

    After getting to school, Wangi went straight to his class to do his class work. It is usual that pupils in

this school prepare for their lessons before the teacher comes.

    To study in the school was once a dream for the poor boy. His mother made a living by washing clothes

for others. Some days she took home nothing, and some days she could get about $3-it was hardly enough

to buy them a full meal for a day.

    Before joining the Mcedo-Beijing school, Mwangi was at home with his seven brothers, collecting garbage

(垃圾). The school is giving these children hope for the future by providing a chance to get education.

    "For me, education is the best gift," said Mwangi.

根据短文内容,简要回答下列问题。

1. How old was Mwangi? 

   ___________________________________________________________________________

2. Which country helped build Mwangi's school?

   ___________________________________________________________________________

3. How did Mwangi's mother make a living? 

   ___________________________________________________________________________

4. 把短文中划线的句子译成汉语。 

   ___________________________________________________________________________

5. 请给短文拟一个恰当的标题。

   ___________________________________________________________________________

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