你想告诉刘涛，你是迈克。你会说：

“进化生物学的新颖而出乎意料的结果改变了人们对自然的观念。”有人把进化生物学的观点归纳为下列几点：①没有固定不变的种类，只有无止境的改变；②大自然是平和协调的；③一种优秀的生物，是一个能在其他生物不适宜生存的地方存活的生命形式；④适应性的变化取代了美德。上述各点中正确的应该是（    ）

    It is Sunday morning，Helen and her brother David are 1a walk in the park. There are lots of signs in the park. Helen knows a lot 2 them. But David 3. Suddenly Helen sees a boy climbing a tree. She says to the boy,"Don't climb the tree. Can't you see the 4Over there?" The boy jumps off the tree soon. David points to the sign and says to Helen，"So the sign means we 5climb trees，right?"  "Yes." says Helen.