1. 根据短文后所给的任务，完成1-5小题

        What will our world be like in 2020? Maybe no one knows. Because we never know what will happen in the future. But it's very interesting to make some predictions. Here are some exciting predictions.
Languages
        English should still be the most popular language, but Chinese should be the second. Now, many foreign people are studying Chinese    A   their second language.
Water
        ①Water will become as expensive as oil because many rivers will disappear. We will haveto save water and pay more for clean water.
Education and Science
        Students won't go to school. They will stay at home and study online. Students from all over the world may study together    B   the Internet. We may eat more genetically (转基因) modified food. And more robots will be around us. ②Lots of danger housework will be done by them.
Living
        People will live and work under the sea. Perhaps there will be big towns, factories and farms under the sea, too. Everyone will carry a pocket computer. ③computer, the, answers, will, all, the, to, their, people, problems, give. Everyone will have telephones in the pockets, too, and they will be able to talk to their friends all over the world.

1. （1） 任务一: 请在文中A、B 两处的横线上填入适当的单词。(每空一词)

   A.    B.

3. （2） 任务二: 请将文中①处句子译成汉语。

   。

5. （3） 任务三: 请将文中②处划线句中的一个单词的错误用法找出，并改正在横线上。

7. （4） 任务四: 请将文中③处的斜体单词连成句子。

    .

9. （5） 任务五:   The passage is mainly talking about.

             A. education and science         B. the school life  C. the life in the future        D. the most popular language