七上英语优化设计答案p40p41

1.C 2. C 3. D 4. B 5. A 6. D
二、 1. She spends two hours going / It takes hertwo hours to go 2. has become partof 3. is harmful to our health 4. spends so much time on computer games5. you’d better stopworking 6. It’s good for your health
三、 1. It will become hot and there will be painsall over. 2. Because they are very small. 3. We can find them everywhere. 4. It will become big andred. 5. It mainly tells us what germsare and where they are.
四、1.B 2.C 3.D 4.C 5.A 6.C 7.A 8.D 9.B 10.B