Farley worked for the Canadian government. One day, he was __1__ to learn more about wolves. Do wolves kill lots of caribou(北美驯鹿)? Do they kill people? They gave him lots of food and clothes and guns. Then they put him on a plane an...

For several years, Americans have enjoyed teleshopping-watching TV and buying things by phone. Now teleshopping is starting in Europe. In some __1__ countries, people can turn on their __2__ and shop for clothes, jewelry, food, toys and __3...

Many people think that Americans 1 their cars almost more than anything else. When 2__ people are fourteen years old, they want to have their __3_ cars. They dont ask for a car from their 4__. So many of them work in _5_ time during their l...

The computer is fast, and never makes a mistake, while people are too slow, and full of mistakes sometimes. Thats __1__ people often say when __2__ talk about computers. For over a quarter of a century, scientists have been __3__ better and...

Rosa liked making up stories. She was so __1__ that her classmates believed her from time to time. In fact, the whole class believed her! At first she supposed it was __2__. Now, as she got up to __3__ before the class, She knew that make b...

The computer plays an important part in our everyday life. It is one of the great __1__ in the world in the __2__ century. It works for us not only at home, in the offices, in big shops, __3__ at schools. Today it is used __4__ many ways. I...

It was very cold that day. It was __1__ heavily and the ground was covered with __2__ snow. The shepherd thought it was dangerous to __3__ the hill and it was difficult for the sheep to find some __4__ there. So he decided to stay in the __...

Who designed (设计) the first helicopter (直升飞机)? Who __1__ of the most famous pictures in the world? Who knew more about the human body than most __2__? There is an answer __3__ all these questions --- Leonardo de Vinci (达芬奇...

Most parents, I suppose, have had the experience of reading a bedtime story __1__ their children. And they must have realized how difficult it is to write a __2__ childrens book. Either the author has aimed (定目标) too __3__, so that ch...

Friends are very important in our everyday life. Everyone 1__ friends. We all like to feel close to someone. __2__ is nice to have a friend to talk, laugh, and do things with. 3 , sometimes we need to be alone. We dont always want people 4...