Lesson 2 Laughter Is the Best Medicine 学案一．知识点精讲（一）生词1. caution n. the quality of being careful, not taking any risks, and try to avoid danger.小心地，谨慎地eg：①. We must carry out the experiment with caution.②. We need great caution when handling the animals...

时间:2025-05-31 10:32栏目:中学教育