Question

People have different ways of greeting each other. They might shake 1. (hand), kiss or hug. But do you ever wonder 2. dogs say hello?

If you are a dog lover, you already know the answer 3. this question. When you arrive home, your dog 4. (jump) up into your lap. It wags its tail, and sometimes gives you wet kisses.

Like humans, dogs have five senses: smell, touch, sight, hearing and taste. Humans use sight as the main sense for 5. (recognize) one another. But dogs have poor eyesight. They use smell to recognize others. A dog’s sense of smell is much 6. (good) than a human’s. It is through its sense of smell that tells the 7. (different) between different people.

Smell 8. (use) by dogs to recognize other dogs, too. They tell 9. differences by the smell of pee and pooh. When two dogs meet, they smell each other’s noses. Then they go side to side, and smell each other’s butts. By 10. (smell) its friend’s behind, a dog knows who it is with.

That is also why dogs smell everything they can on the road. By smelling grass, trees and signposts, dogs know which other neighborhood dogs have been around.

Answer

1.hands

2.how

3.to

4.jumps

5.recognizing

6.better

7.differences

8.is used

9.the

10.smelling

【解析】这篇短文主要介绍了狗是如何与人类或者自己的同类打招呼的。

1.本题考查shake hands(握手)。故答案为hands。

2.句意：但你曾想过狗是怎样打招呼的吗？怎样是how。故答案为how。

3.本题考查短语the answer to the question(问题的答案)。故答案为to。

4.根据下句It wags its tail, and sometimes gives you wet kisses可知，本题用一般现在时，动词用第三人称单数。故答案为jumps。

5.本题中所填词做for的宾语，动词用动名词形式。故答案为recognizing。

6.前有much修饰，句中有than，形容词用比较级。故答案为better。

7.前面有冠词the，应用different的名词形式。故答案为differences。

8.句意：嗅觉被狗用来识别其他的狗。根据句意，本题用一般现在时的被动语态。故答案为is used。

9.根据后面的名词differences可知，本题用定冠词the。故答案为the。

10.前有介词by，后面用smell的动名词形式。故答案为smelling。