1.1. Changmao is a ________.

A lion

B pig

C dog

D cat

解析：选C。C细节理解题。根据第一段中的“His name is Changmao. He is a Xia Si dog.”可知，“长毛”是一只狗。故选C。

2.2. Where did the dogs fight?

A In a house.

B In a park.

C On the street.

D In a yard.

解析：选D。D 细节理解题。根据第二段中的“some dogs were fighting in a yard”可知，一群狗在院子里打架。故选D。

3.3. How did other dogs feel when Changmao came near?

A Happy.

B Scared.

C Tired.

D Hungry.

解析：选B。B细节理解题。根据第二段中的“He didn’t bark, but other dogs felt scared”可知，当长毛靠近时，其他狗感到害怕。故选B。

4.4. What did Changmao do to the noisy dog?

A Barked at it.

B Played with it.

C Pushed it down.

D Ran away from it.

解析：选C。C细节理解题。根据第二段中的“Changmao easily pushed the noisy dog down”可知，“长毛”轻松地将“闹事者”摁倒在地，稳稳踩住。故选C。

5.5. What can we know about Changmao now?

A He is popular.

B People don’t like him.

C He has left China.

D Many people go to see him.

解析：选A。A 细节理解题。根据最后一段中的“This video made Changmao popular. Many people in China like him.”这个视频让长毛很受欢迎。在中国有很多人喜欢他。故选A。