题目

补全对话 1 – What are you going to do this weekend? - I’m not _________. Maybe we are you going to a health lecture. 2 – Do you know the _________ of your exam? - I’m afraid I failed. 3 –China is not a developed country, but a ____________ one. - I agree with you. 4 Congratulations!    - It was ____________, really. 5  – Do you have any questions?   - Yes, I __________ .   下列变化中，属于化学变化的是（ ）A.将木头锯断B.铁生锈C.将弯曲的弹簧拉直D.水受热变成水蒸气