Question

Cats’ sense of smell is very important to their health. Many cat owners have seen a cat smell the food and refuses it. Careful sniffing tells the cat if something is safe to eat.

Cats have a pair of vomeronasal organs(犁鼻器) on the roof of the mouth. When the cat wants to sniff, she will breathe the air in through her mouth. At this moment, she will often squint(斜视) her eyes and maybe even flatten(使…平坦) her ears. This makes her look like she is making faces. The vomeronasal organs will then analyze the smell---almost as if the cat is tasting the smell.

When you come home from outside the house, your cat can smell what you had for lunch and for a mid-afternoon snack. She can smell the people you shook hands with and your neighbour you stopped to talk to and hug. She can smell the grass brought under your shoes as you took a shortcut across the lawn. Your cat’s sense of smell is so good that she can smell difference between a gallon of water with a teaspoon of salt in it and plain water. In comparison, we think of salt as completely tasteless.

Cats have scent glands(臭腺) on each side of the forehead, on the chin, the lips and next to the tail. When your cat rubs up against your hand, your leg, the sofa, and your bed, she is leaving her scent in those things. She will then use her sense of smell to recognize “her” things, people and even other pets in the home.

If you want to have fun with your cat’s sense of smell, take some small bits of different things, such as a bit of chicken, some flowers and some fish. Place each different scent under a piece of paper towel(so your cat cannot see any of them) and encourage your cat to investigate and find what kind of food she likes to eat best.

1.Cats know whether the food is fit to eat or not with their____________.

A. sense of touch      B. scent glands   C. organs of smell   D. sense of taste

2.The third paragraph was written mainly to prove that _____________.

A. cats are very smart                  

B. cats have a good sense as dogs

C. salty water has a special smell         

D. cats’ sense of smell is excellent

3.What does your cat do when it rubs against your foot?

A. She puts her scent on it.             

B. She shows respect to you.

C. She asks you to play with her.        

D. She smells where you were just now.

4.What does the word “investigate” mean in the last paragraph?

A. Smell.        B. See.            C. Search.          D. Send.

5.The passage mainly tells us _________________.

A. cats are one of our best friends      

B. cats have sharp sense of smell

C. sense of smell is very important     

D. cats know if something is safe to eat

Answer

1.C

2.D

3.A

4.A

5.B

【解析】

试题分析：这篇短文主要介绍了猫有极其灵敏的嗅觉。它可以通过嗅探食物来判断食物是否是适合吃的。他还能通过嗅觉来判断你和谁握过手等。猫身上有气味臭腺，当它在你身上磨蹭时就会留下气味。通过气味他就能辨别什么是属于她的。

1.Careful sniffing tells the cat if something is safe to eat.仔细的嗅探告诉猫什么东西是适合吃的。即通过嗅觉器官来探知，故选C

2.归纳理解题。根据第三段描述Your cat’s sense of smell is so good that she can smell difference between a gallon of water with a teaspoon of salt in it and plain water. In comparison, we think of salt as completeltasteless.可知猫的嗅觉非常好。故选D、

3.细节理解题。根据第四段When your cat rubs up against your hand, your leg, the sofa, and your bed, she is leaving her scent in those things.可知猫磨蹭你的手腿等，她就留下了她的臭腺气味。故选A、

4.】词意猜测题。根据Place each different scent under a piece of paper towel(so your cat cannot see any of them) and encourage your cat to investigate and find what kind of food she likes to eat best.句意，把每一种不同的气味的东西放在纸下，鼓励你的猫去闻，就能发现她喜欢吃那种食物。故选A

5.短文的主旨大意，可知是在介绍猫的灵敏嗅觉。故选B

考点：科普类短文阅读。