题目

5．图示高等动物的细胞分裂示意图。下列叙述正确的是 A．甲一定为次级精母细胞 B．乙一定为初级精母细胞 C．丙为次级卵母细胞或极体 D．丙中的M、m为一对同源染色体 答案：B一、 听录音，选出正确的应答句。() 1. A. They are chairs. B. I like horses. C. There are a lot of animals.() 2. A. Yes,it is. B. No,there aren’t. C. No,they aren’t.() 3. A. I can see twelve cows at the farm.   B. There are twelve cows at the farm.   C. I have twelve cows at the farm.() 4. A. I like ducks.   B. Yes,I do.   C. The ducks are very .cute.