20.
Today sending text messages(短信) through mobile phone(手機) is a part of our lives.According to a survey(調查),a third of the U.S.children send more than 100text messages a day.Sending text messages is becoming more and more popular among young people in China,too.Children prefer text messages to communicate(交流) with friends no matter(不論) where they are,even under the noses of parents and teachers.It seems that some children are“addicted(上癮)”to sending text messages.In fact,sending too many text messages is bad for their lives,health and study.However,it isn’t all bad.It helps to improve our lives in some ways.Today many children greet(問候) each other on holidays by sending text messages instead of writing paper cards.During the last Spring Festival,more than 15billion(十億) text messages were sent in China.“Sending text messages helps save my pocket money,”said Wang Cheng,a friend of mine,“and it saves paper,too.”Many parents send their kids text messages instead of giving orders by mouth.It sounds more friendly.And children can accept them easily.
46.SendingB is a part of our lives today.
A.magazines
B.text messages
C.cards
47.A young people like sending text messages,too.
A.Chinese
B.English
C.Indian
48.Why is sending too many text messages bad for study?A
A.Because it costs much time.
B.Because it costs much money.
C.Because it makes the parents angry.
49.Today many children greet each other on holidays byC.
A.visiting
B.writing paper cards
C.sending text messages
50.Sending text messages canB.
A.make us study well
B.save money and paper
C.make children clever.