While learning the science lessons，I used to get a doubt—why ear，nose，tongue and eyes shou

While learning the science lessons，I used to get a doubt—why ear，nose，tongue and eyes should be called as special senses？The basic reason is that these are the channels through which we maintain contact with the surroundings.Though apparently it may feel like these are individual sensory organs，they do show some connectivity.Interestingly，our hearing is less sharp after we eat a heavy food.Isn’t it good for a sound nap after a stomach­full meal？That does not mean we go deaf after a meal，but the hearing pitch(强度) does change after a heavy meal.
We usually give credit of the taste to our tongue，but do you know that unless saliva(唾液) dissolves something，our tongue cannot recognize the taste of the food eaten.Taste is nothing but the food chemicals dissolved in the saliva being sensed by the taste buds present on the tongue.Try_to_dry_off_your_tongue_and_mouth_with_a_tissue_paper_and_then_taste_something.
Women are much better smellers than men.They are born with this characteristic ability and can correctly pinpoint the exact fragrance of the sample.We all can store almost 50,000 different scents(气味)，which are strongly tied to the memories.
Pupils(瞳孔) do not respond to light alone，but to the slightest bit of noise around too.Thus surgeons，watchmakers and those professionals who have to perform a much delicate job do prefer to have a sound­free environment.Even a small noise can dilate(扩大) their pupils，change the focus and blur(使模糊) their vision.If you do not wear glasses or contact lens due to having a 6/6 vision，you are just among the one third of the human population.It is now statistically proved that only one third of the population has perfect vision，rest all are either wearing glasses or are trying to read with a compromised vision.
Each and every one of us has a particular or individualistic or characteristic smell，which is unique to us，except for the identical twins.This smell is very subtle(微妙的) yet can be sensed even by a newborn.It may be due to this scent that the newborn recognizes the presence of his parents around.Many of us can pinpoint the smell of our significant friends and colleagues.A significant part of this phenomenon is guided by genetics but it is also modified by the environment，diet and personal hygiene.This all together creates the unique chemistry that is individualistic for each person.
【小题1】We can learn from Paragraph 1 that .A．after a full meal our hearing is as good as beforeB．all sensory organs are connected and can be exchangedC．sensory organs’ functions can never be changed for their particular characterD．we feel and learn about the world around us through our eyes，ears，nose and tongue【小题2】What is the text mainly about?A．The functions of sensory organs.B．The connectivity of sensory organs.C．A newborn’s senses of the sensory organs.D．The differences of senses between women and men.【小题3】What does the author mean by the underlined sentence in Paragraph 2?A．Our tongues can’t be dried while eating something.B．If your tongue is dried without any saliva on it，it will not work.C．A tissue paper is the only thing that can be used to dry our tongues.D．If your tongue is dried with a tissue paper，it may work as well as before.D

(答案→)D 解析：【小题1】　D解析　细节理解题。根据第一段第一、二句可知，我们通过感官和外界保持联系，故D项符合。由第一段倒数第三句“Interestingly，our hearing is less sharp after we eat a heavy food.”可知A、C两项错误；B项后半句未提及。【小题2】B解析　句意理解题。根据第二段的内容可知，舌头必须在唾液的配合下才能分辨味道，如果用纸把舌头擦干，舌头的味觉功能就会丧失。【小题3】A解析　主旨大意题。本文主要说明了感觉器官的各种功能，故答案为A项。

谢谢回答！！！