阅读与回答问题。

When Dr, Karen McComb came to Amboseli Park her first task was to learn the names of the one hundred or so elephants most often seen.

Scientists working in the park have learned to study elephants by watching them up close. They have a list of almost one thousand elephants. There are records for all of the elephants born since 1972. Amboseli was a good place for Dr. McComb to study animal communications. Elephants were a great subject because their lifestyle depends on communication.

Dr. McComb and her team had learned a lot about elephant communication, but they kept on thinking about one puzzling (困惑的) watch. Some families were better at distinguishing (区别) calls of friends from those of strangers.

What made some families smarter than others? The scientists searched their records for an explanation. To their surprise, there was only one factor (因素) of importance: The "smartest" families always had the oldest grandmothers. A family, as it did in all other activities, waited for some signal (信号) from the grandmother when they heard a strange contact call. And older, more experienced grandmothers were better at telling whether other elephants were strangers or friends just by their calls.

That was an important discovery. It showed how an elephant family depends on the experience of the grandmother.

回答下面5个问题,每题答案不超过5个词。

1.How do scientists working in the park study elephants?

2.What did Dr. McComb study?

3.What did Dr. McComb and her team do for an explanation?

4.Who does everyone in elephant families listen to?

5.What does an elephant family depend on in all the activities?

Computers are useful machines. They can help people a lot in their daily life. For example, they can help people to save much time to do much work, and they can help people to work out many problems they can’t do easily. Our country asks everyone to learn to use computers except the old people.

Today more and more families own computers. Parents buy computers for their children. They hope that computers can help them to improve their studies at school. But many of their children use computers to play games and watch videos. For most students, computers can not help them to study better but make them fall behind. So computers are locked in boxes by parents.

In some other countries, even some scientists also hate computers. They say computers let millions of people lose their jobs or bring them a lot of trouble. Will computers really bring trouble to people or can they bring people happiness? It will be decided by people themselves!

1.Why do we say the computer is a useful machine?

A. Because our country asks us to learn to use it.

B. Because it can help us a lot.

C. Because we can use it to play games.

D. Because it can help us to find jobs.

2.What do many parents complain about?

A. They complain that their children use computers to play games.

B. They complain that computers let them lose their jobs.

C. They complain that computers bring them a lot of trouble.

D. They complain that computers can’t bring them happiness.

3.In this passage we know computers ______.

A. also bring us trouble B. bring us happiness only

C. are hated by people D. are bad for people’s health

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