题目

Complete the dialogue with proper words or sentences.A: Sam. Where are you going this weekend?B: 【1】.A: Central Park? 【2】?B: Because there is going to be an English party this Saturday.A: Wow! That sounds great.B: Would you like to go with me?A: 【3】. I want to improve my English, too. How are we going there?B: 【4】. Then we can take exercise by riding bikes at the same time.A: Oh, we’d better not. The weather report says it will be rainy on Saturday.B: That’s terrible. Shall we take a bus or take a taxi?A: 【5】? Also, we can save some money.B: I agree with you.下列关于杂化轨道的叙述中，不正确的是（  ）A．分子中中心原子通过SP3杂化轨道成键时，该分子不一定为正四面体结构B．杂化轨道只用于形成σ键或用于容纳未参与成键的孤电子对C．乙酸分子中三种原子均以杂化轨道成键D．N2分子中N原子没有杂化，分子中有一个σ键、2个π键