题目

What do you usually use mobile phones for?Sending text messages for fun?Playing games?Well mobile phones can do (1) _______ more than that.(2) _______ this year’s Asian tsunami(海啸),mobile phones saved many (3) _______.More than 10,000 international phones were (4) _______ when the tsunami hit.Police sent text messages to them and found more than 2,000.But how?People (5) _______ the signal and found out (6) _______ the tourists were.So,how can (7) ______ 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.If you have a signal you can see it on the phone’s screen.Sometimes,if the signal is weak,(8) _______ can be difficult to make a phone call.When the phone is finding a signal,it also sends a (9) _______ 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 telecommunications offices where you are.The office will find out

提问时间：2021-01-24

答案

cbabd babcd
文章本身有些表达不地道,估计是中国人写的或者中国把外国文章改写的.
甚至有明显错误,比如when the phone is FINDING a signal...find显然是不能用于进行时的.
这种中式英语文章看多了有害语感.
第五题感觉没有好答案.最准的应该用Trace,是追踪手机信号的最准确表达.