【单选题】已知BCl3是平面三角形分子,则中心原子B所采取的杂化类型为
【简答题】Word Transformation Fill in the following blanks with the appropriate form of the word given. barefoot 1. We took off our shoes and socks and walked _____ along the beach. 2. Most of the children in t...
【简答题】非谓语动词 5-6 一、单选题(共 50 题;共 100 分) 1.Nowadays, Young people send messages to their parents instead of ______ them. A. Write to B. writing C. writing to D. writes 2.We should urge people _______ riding in...
【简答题】Listen to the conversation and fill in the blanks. A: Hey, what's wrong? You look really stressed! B: I have an important ___1___ tomorrow. I've been studying for it all week, but I feel like I don'...