题目

阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。 It was a summer afternoon and some boys were playing together in a park. They knew each other well, as they(spend) the last three years of school together and tomorrow was the start of a new term, aboutthey were excited and nervous. The first day of school came, and all the boys from the park the day before were put in the same classcoincidence. They jumped for joy all morning long. After lunch, the teacher came into the classroom with a boy and it was evident they had never see不符合现代生物进化论基本观点的是：(　 ) A、种群是生物进化的基本单位　　 　　 B、生物进化的实质是种群基因频率的改变 C、进化的根本原因是遗传　　 　　　 D、隔离导致物种的形成