题目

发生在蚕豆花粉母细胞减数第一次分裂后期的行为是     A．染色体复制                       B．联会     C．同源染色体分离                   D．着丝点分裂 答案：C_______ the number of the teachers in our school? -______200.A. How many are; There are B. How much is; There isC. What’s; There is D. What’s; It’s