小蜜蜂档案我是来自上海市奉贤区解放路小学二(3)班的朱郅宸。我喜欢画画、练字,唱歌也是我很喜欢的一项娱乐活动。这个暑假我刚学会了游泳。狗比人类具有更加灵敏的嗅觉,这是因为狗的身体结构更适于嗅气味。动物学家研究发现,狗鼻子里有许多褶皱,上面长有黏膜和许多纤小的嗅觉细胞,数量达到2亿多个(一种牧羊犬有两亿两千万个嗅觉细胞,在鼻腔里所占面积高 Small bee file I am from Shanghai Fengxian District Jiefang Road Primary School two (3) classes Zhu Chen. I like drawing, practicing words, singing is also my favorite entertainment. I just learned to swim this summer. Dogs have a more sensitive sense of smell than humans, because the dog’s body structure is better suited to sniffing odors. Zoologists have found that there are many folds in the dog’s nose, with mucous membranes and many tiny olfactory cells on it, reaching more than 200 million (a 220 million olfactory cell of a sheepdog in the nasal cavity High area