在一幅比例尺为1：100000000的亚洲地图上量得亚洲最东端到最西端的图上距离约为10厘米，则它们的实地距离约为（ ）
A．100千米
B．1000千米
C．10000千米
D．5000千米
根据比例尺公式：比例尺=
，得到：实地距离=图上距离 实地距离
，即：10÷图上距离 比例尺
=10×100000000=1000000000厘米，也就是10000千米．故选项C符合题意．1 100000000
故选：C．
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| When I had something difficult to do, I used to ask my mother for help. But she always said, "Do it yourself, dear." I was not 1 at all. I thought she was the 2 mother in the world! For example, one day, I decided to 3 some friends to my home. My bedroom was not in order. Books were everywhere. And I didn't make the bed. I asked my 4 to help me clean it, 5 she still said, "Do it yourself, girl." Because of my "lazy mother", I have to 6 my clothes and clean my room. I have to help my parents 7 I even have to go to the dentist by myself. It is really hard for me to do everything well, but I have learned 8 . As time goes by, I understand my mother. She makes me clever and diligent (勤奋的). 9 a great mother! A 10 mother is worth (等值于) one hundred teachers! Don't you think so? | |||
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