人教英语九年级Unit 13 We’re trying to save the earth单元分段练习及答案

Unit 13 We’re trying to save the earth. 第一课时Section A (1a---2d) 一. 根据句意及首字母填单词。 1. Thank you very much from the ________ of my heart. 2. The river ________ to be very clean, but it’s very dirty now. 3. I hate people who drop l________ everywhere. 4. To cut down air pollution, we should take the bus or subway ________ of driving. 5. The fewer p________ bags we use, the less pollution we will have. 6. The new bike ________ me 1000 yuan yesterday. 7. Today some rivers are f________ of rubbish. 8. His teacher makes a big d_________ in his life. 9. The old lady didn’t know whether her son was a_________ after the war. 二. 选择题。 ( ) 1.----There are a lot of ______ of bike riding. ----I agree. It’s good for the environment and it saves money. A. instructions B. rules C. advantages D. products ( ) 2. A smile ______ nothing, but gives much. A. costs B. spends C. cost D. spent ( ) 3. The water is _____. We must be careful of