如图，A，B两地被池塘隔开，小明通过下列方法测出了A，B间的距离：先在AB外选一点C，然后测出AC，BC的中点M，N，并测量出MN的长为12m，由此他就知道了A，B间的距离，有关他这次探究活动的描述错误的是（　　）

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    There is a tiger and a monkey. They are friends. But one day they want to know who is stronger. One of them says, “The one who can get apples over there is stronger. ”There is a river over there. The monkey says, “I can't swim. ”The tiger says, “I can swim. Please sit on my back. ”They go across(穿过) the river. The apple trees are very tall. The tiger can't reach(够着)the apples. The monkey climbs up the tree and gets many apples. Now they know they should help each other.

萝卜、桔子等蔬菜水果放久了会空心，口感也会越来越差．这是因为在存放期间这些蔬菜水果仍然要进行____．从而消耗掉了部分有机物造成的．

2017年春节联欢晚会秉承“东西南北中、全民大联欢”，分别设置哈尔滨、上海、桂林、凉山（四川）四大分会场，分会场节目具有浓郁的地域特色。结合右图，回答小题。