问题
选择题
下图是某动物正常分裂的细胞示意图。下列有关叙述正确的是
A．该细胞一定是有丝分裂的细胞
B．如果3是Y染色体，则4是X染色体
C．如果2和4为性染色体，则1和3为常染色体
D．该细胞中1和2、3和4为同源染色体
答案
答案：C
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下图是某动物正常分裂的细胞示意图。下列有关叙述正确的是
A．该细胞一定是有丝分裂的细胞
B．如果3是Y染色体，则4是X染色体
C．如果2和4为性染色体，则1和3为常染色体
D．该细胞中1和2、3和4为同源染色体
答案：C
| 请从下面所给答案中选出适当的内容填空。 | |
| Teacher: Hello, everyone. In spring, we can go outing (春游). Everyone: OK, 1 Teacher: Is there a path here? Wu Man: 2 Teacher: Is there a village over there? Liu Ying: Yes, there is. Wu Man: Is there a lake in the nature park? Liu Ying: Yes, 3 There is a river near here. Wu Man: 4 Li Ying: It's blue. Wu Man: Can you see it in the city? Li Ming: 5
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