Many animals use some kinds of “language”. They use signals(信号) and the signals have meanings. For example, __1 a bee has found some food, it goes 2 its home. 3 is difficult for a bee to tell __4 bees where the food is speaking to t...
Life in the twenty-first century will be very 1 . Many changes will take place, but 2 will the changes be. The population is growing 3 . There will be many 4 in the world and most of them will live 5 than people in the twentieth century. Co...
Mr. Wang teaches English in a middle school. He likes his work very much. He wanted 1 a teacher even when he was a young boy. There are six classes in a school day at Mr. Wang's middle school. Mr. Wang teachers five of these six classes. 2...
Many people go to school for an education. 1 learn languages, history, geography, physics, chemistry and maths. Others go to school to learn a skill so that they can 2 a living. School 3 is very important and useful. Yet no one can learn ev...
Suppose(假设) you are going to Boston, and you 1 the city before. If someone 2 you about the interesting places in the city, you __3 to get some ideas of what you will see. But don’t have a 4__ idea of where these places are or of how t...
Do you know Eskimos (爱斯基摩人)? Let me tell you something about their 1 . The Eskimos live near the North Pole (北极). There are only two 2 there, winter and summer, There are no spring 3 autumn there. The winter nights are 4 . You...
Several years ago I studied in a university in the biggest city in our country. It’s beautiful but it’s hot in __1__. So I usually returned to my hometown when my __2__ began. It is not big, but it’s cool and quiet. I could __3__ in t...
Have you ever seen the advertisement: Learn a foreign language in six weeks, 1 give your money back? Of course, it 2 happens quite like that. The only language 3 to learn is the mother language. And think 4 practice is needed for that. Befo...
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 don’t always want people...
I have tried many ways to be 1 . I don’t wear a sweater when I 2 , and two days ago I walked in the 3 without my shoes. But so far nothing 4 . Debbie once told me about a boy in her class who liked 5 school. He would rub(摩擦) the end o...