题型:阅读选择 题类:常考题 难易度:普通
牛津版(深圳·广州)初中英语八年级下册第八单元检测卷
Today there are nearly 7. 4 billion people on Earth. By the year 2050 there may be 9. 8 billion. There are many people to feed. We need more and more food.
One way to produce more food is growing stronger plants. For thousands of years, farmers have made plants better. Every season, they pick the best plants for the next season. It works very slowly. Since 1983, scientists have been able to change plants more quickly by changing their genetic (基因的) material. Foods from plants grown in this way are called genetically modified (转基因的) foods, or GM foods.
By changing the genetic material of a plant, it is possible to make new plants. Scientists make plants which are strong against plant diseases. They can also help in our diseases: a kind of rice will be grown, for example, which stops people becoming blind.
Rich countries produce GM foods because they are easy to grow and bring in more money. Poor countries are interested in them because they help produce more food.
GM plants are not natural. No one knows how good or bad they are. Making GM foods is only one way of feeding people in 2050. There are strong feelings against them because they are unnatural. They may feed people, then hurt them or their children later. But both rich and poor countries are interested in their uses, and they are not going to go away. In 2050, we may think differently about them.
Are you interested in robots? If so, try out robot Little Q at our science center from August Ist to August 6th. Little Q is a cute robot with a round head, two big eyes and two long legs. It's like a big toy that our children will love.
Opening Hours | 1:00 p. m. —9:00 p. m. from Tuesday to Sunday |
Visitors | People of all ages are welcome. Children under 12 must come with an adult(成年人). Pets can't come in. |
Food & Drinks | No outside food or drinks. Visitors can buy food and drinks in the center. |
Tickets | Adults:$10 Child (under 12):free |
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