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People are interested in animal communication and scientists have done lots of researches on this subject.

Most animals always use body languages to communicate. If cats look and blink（眯眼）at you slowly, which shows their love to you. You can also do this to show your love. When they sit with tails around themselves, they’re happy. If they feel scared, their tail may look like the end of toilet brushes. When they put ears back, they are a bit mad. Birds can show feelings through eyes and feathers. If birds make their pupils（瞳孔）large and small from time to time, this can be a sign that they’re excited or scared or angry. Birds will ruffle（弄乱）their feathers when they clean themselves. However, if their feathers remain ruffled, it may mean they are ill. You’d better take them to see a veterinarian in an animal hospital.

Some animals communicate by smell. Dogs are famous for this. They can learn about something by smelling. They can find missing people by using their fantastic sense of smell. They have helped the police for a long time. Mice have an excellent sense of smell, too. Scientists even train them to find landmines（地雷）. It is found that even ants use smell, they use smell to tell other ants where the food in.

Frogs and insects communicate by sounds. Usually the “gentleman” makes sounds to invite the “ladies”. Whales and elephants also use sounds to communicate, these sounds can travel very far through water or ground, but it is impossible for humans to hear some of the sounds.

Learn more about the ways of animal communication at http://www.animal.com.cn.

1．When a cat is happy, it may ________.

A．look and blink at you slowly	B．ruffle its hair
C．sit with its tail around itself	D．put its ears back

2．The underlined word “veterinarian” in Paragraph 2 means ________ in Chinese.

A．训养师

B．兽医

C．管理员

D．牙医

3．What animals can communicate by smelling from this passage?
①elephants   ②dogs   ③whales       ④mice   ⑤insects       ⑥ants

A．①③⑤

B．②③④

C．①⑤⑥

D．②④⑥

4．Which of the following is TRUE according to this passage?

A．Dogs can communicate by neither smell nor body languages.

B．Animals hardly use body languages to communicate.

C．Humans can’t hear the sounds of frogs and insects.

D．Birds can show their feelings through their eyes and feathers.

5．What’s the best title of this passage?

A．The Ways of Animal Communication	B．The Importance of Communication
C．The Ways to Understand Body Languages	D．The Importance of Caring for Animals