4．选A　推理判断题。根据第五段最后一句“We have now watched enough young chimpanzees to prove both points.”可推断，A项正确。

　　Ⅲ.参考范文：

　　Chinese style of crossing the road

　　Recently, a heated debate arose online in China about the Chinese style of crossing the road. As is shown in the picture, a large crowd of people are crossing the road regardless of red lights,

　　which prevents the vehicles from moving forward even at the sight of green lights.

　　Various reasons might account for pedestrians to run

　　traffic lights. Some people believe it is not against traffic laws and won't be fined because so many people do it together. Others may argue that traffic lights are not arranged scientifically, so that they have to wait too long before they can cross the road.

　　In my opinion, the jaywalkers should be severely punished. Most important of all, people should be educated to obey laws from childhood. Start out small and develop a good sense and habit of observing laws. Only by improving people's safety and law awareness can we create a harmonious society.

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