题目

填写单词补全对话，每空一词。 A: Hi, John! There will be a cycling race in our city in the afternoon. B: That’s g 1  Will you take part in? A: Of course. Can you go with me? B: Sorry, I’m a2 Ｉcan’t. A: Why? B: Because my parents will take me to Beijing tomorrow. I must go home to prepare my things. A: It’s a p 3   How I wish you could join us! B: I h 4  so  . But I will join you next time. I hope you have a nice trip. A: Thank you. B: When you ride a bike, you must be careful. I wish you Good l 5  ! and I’m sure you will win.在减数分裂过程中，染色体数目减少一半发生在A 减数第一次分裂    B 减数第二次分裂    C 联会时期    D 四分体时期