16．
　　Emily Mason and George Peters were neighbours. They have lived next door to each other as long as they can remember. When they were little children, they (1)      play together. They were good friends (2)      they sometimes fought over toys or quarrelled about what game they would play. As they grew old, they played together less. Emily (3)      to be with girls, and George preferred to play with boys. When they were about fifteen years old, they seldom spoke to each other, not because they had disagreed with each other about anything, but just because they (4)       different groups. For one thing, Emily was developing into a very good student, while George was more (5)      in sports. Emily liked television programs, and for some reasons, she enjoyed watching football games very much. Her mother used to say, "Emily, I've (6)      heard of a girl who likes football as much as you do." Mrs Mason simply did not approve of her daughter's interest. Football, she felt, was for men and boys.

31．　　More than 50, 000, 000 people live in the rainforests of the world and most of them do not hurt the forest they live in. They eat the fruits that grow on the forest trees, but they do not cut them down. They kill some animals to eat, but they do not destroy them.
　　When we cut down the rainforests, we destroy these forest people, too. In 1900, there were 1, 000, 000 forest people in the Amazon forest. In 1980, there were only 200, 000.
　　The Yanomami live along the rivers of the rainforest in the north of Brazil. They have lived in the rainforest for about 10, 000 years and they use more than 2, 000 different plants for food and for medicine. But in 1988, someone found gold in their forest, and suddenly 45, 000 people came to the forest and began looking for gold. They cut down the forest to make roads. They made more than a hundred airports. The Yanomami people lost land and food. Many died because new diseases came to the forest with the strangers.
　　The Yanomami people tried to save their forest, because it was their home. But the people who wanted gold were stronger.
　　Many forest people try to save their forests. Chico Mendes was famous in Brazil because he wanted to keep the forest for his people. In December 1988, people who wanted to cut down the forest killed Chico Mendes.
　　In Borneo, people were cutting down the forest of the Penan people to sell the wood. The Penan people tried to save their rainforest. They made blockades (障碍物) across the roads into the forest. In 1987, they closed fifteen roads for eight months. No one cut down any trees during that time.

32．　　How would you use a radio or a telephone if you had no electricity or batteries? These (1)       bothered British inventor Trevor Baylis. So in 1996 he (2)       a wind-up (装有发条的) radio. It doesn't need electricity or batteries. You wind it up (3)       hand. It plays for about an hour. Then, you wind it up again.
　　Then in 1999, Baylis invented a mobile telephone that is powered by shoes. The shoes (4)       a small battery that is powered when you walk. This battery is connected to a mobile phone. These two simple inventions can bring modern (5)       to all parts of the world.
　　Baylis doesn't have a university degree in engineering. In fact, he left high school before graduating. He just loves making things to help people. He never knows (6)       ideas will come to him. The idea for the telephone came to him in a dream.

33．　　How do you light up the night sky?The answer is by using electricity. But did you know that nature can glow, too?
　　Scientists have found many glowing creatures. Most of them live in the ocean. Some use their lights to talk to each other. (1)O       use them to hunt or to protect themselves.
　　Scientists around the world are looking at this kind of light for new (2)i       . In 2013, the US company Gleaux said it had created the world's first light﹣producing plant. It is a genetically-modified (转基因的) plant. It can glow like a firefly.
　　Alexander, the company's founder, and other scientists hope that in the future, glowing plants could (3)r       lamps and glowing trees could line highways. Krichevsky (4)a        hopes the technology could be used in farming. Farmers could know when their crops need water or are ready to be picked if they glow.
　　While Gleaux is working (5)o       glowing plants, the French company Glowee is trying to use glowing bacteria (细菌) to light up shop windows and street signs.
　　"Our goal is to learn the way we (6)p       and use light," said Glowee. "We want to help reduce the 19 percent of (7)e       consumption (消耗量) that is used to produce light."

34．　　Each year several thousand people are killed on the road in Great Britain. Every year between one and two hundred thousand people are injured, or killed in road accidents.
　　If you are in England and if you listen to the eight o'clock news from BBC, you will often hear news of road accidents. You may hear something like this: "On last Monday evening, at about twenty minutes to ten, a cyclist was knocked down by a truck at crossing of Oak Road and High Street in Croydon. The cyclist had died from his injuries. Anyone who saw the accident please communicate with New Scotland Yard, telephone number Whitehall one, two, one, two."
　　Accidents are often caused by carelessness. If everybody obeys the rules, the roads will be much safer. How can we make the road safer?
　　In Great Britain traffic keeps on to the left. Motor-cars, trucks, buses and cyclists must all keep to the left side of the road. In most other countries traffic keeps to the right.
　　Before crossing the road, stop and look both ways. Look right, look left, look right again. Then, if you are sure that the road is clear, and there is nothing coming, it is safe to cross the road. If you see small children, or very old people, or blind people waiting to cross the road, it is kind to help them to cross the road in safety.
　　We must teach young children to cross the road safely and set them a good example so that there will be fewer and fewer accidents and our life will be safer.