出国留学网中考频道在考试后及时公布各科中考试题答案和中考作文及试卷专家点评,请广大考生家长关注。时光飞逝,不管情愿与否,无论准备与否,我们已走进初三,走近我们的梦!祝愿决战2014中考的新初三学员能加倍努力,在2014年中考中也能取得优异的成绩。
阅读理解
What do you usually use mobile phones for? Sending text messages for fun? Playing games? Well, mobile phones can do far more than that.
During this year’s Asian tsunami (海啸), mobile phones saved many lives.
People were using more than 10,000 international phones when the tsunami hit.
Police sent text messages to them and found more than 2,000. But how? They followed the signal (信号) and found out where the tourists were.
So, how can something so small be so smart? Well, here’s how.
When you turn the phone on, it tries to find a signal. This signal comes from the telephone network. When the phone is finding a signal, it also sends a message to the telephone network. This message tells the station where the phone is.
When you start to make a phone call, the telephone network tells telecommunication (电信) offices where you are. The office will find out who you’re calling, then put you through to your friend. When you start to talk, a device (装置) in the phone changes your voice into electric signals. These signals travel across the telephone network and reach your friend’s phone. Then his phone changes the signals into your voice again. Finally, you can hear each other!
( )20. What’s the main idea of this passage? It tells us ______.
A. mobile phones are very useful and how they work
B. mobile phones saved all the lives during this year’s Asian tsunami
C. mobile phones can only be used to send text messages and play games
( ) 21. People were using ______ international phones when the tsunami hit.
A. more than 2,000 B. over 10,000 C. 8,000
( ) 22. From the passage, which sentence is TRUE?
A. When you start to make a phone call, the telephone network tells your friend where you are.
B. When you start to talk,a device in the telephone changes electric signals into your voice.
C. During this year’s Asian tsunami, police followed the signal and found out where the tourists were.
语文试题 | 数学试题 | 英语试题 | 政治试题 | 物理试题 | 化学试题 | 历史试题 |
语文答案 | 数学答案 | 英语答案 | 物理答案 | 化学答案 | 历史答案 | 政治答案 |