题目内容
2. A special bag is usually fixed to the walls to prevent (float) .
2. floating
19. 八分之三的……20. 在网上学校学习
() 2. It’s very difficult for us Mars.
A. to live B. to live in C. living on D. to live on
() 3. How do you life in the countryside?
A. think B. like C. think of D. find out
8. Mike found a (挑战性的) job as a computer programmer.
7. Sit on the sofa if you feel (comfortable) on the hard chair.
() 4. Joanna is what life will be like in fifty years.
A. thinking B. think of C. thinking about D. think over
2. 有些人只是不知道怎样节约能源。
Some people just don't know.
3. (电子的) music is now very popular among young people around the world.