In Canada, two birds build a nest. They build it on the top of a very tall tower(塔). It is 30 metres tall! The tower has power cables(电力电缆) all over it.

A black bear sees the nest. He wants to look in it. The bear climbs the tower! This is very dangerous. The birds peck(啄) at the bear. But the bear doesn’t quit until he gets to the top.

A woman films(录视频) the bear’s climb. She says that after the bear comes down to the ground, he walks away.

1.How many birds build the nest?

A Five.

B Four.

C Two.

D One.

解析：选C。C 细节理解题。根据第一段的“In Canada, two birds build a nest.”可知，这个巢是两只鸟的家。故选C。

2.How tall is the tower?

A 20m.

B 30m.

C 40m.

D 50m.

解析：选B。B 细节理解题。根据第一段的“It is 30 metres tall!”可知，这个塔有30米高。故选B。

3.Why does the bear climb the tower?

A He wants to look in the nest.

B He likes staying in a high place.

C He wants to eat food in the tower.

D He wants to make friends with the birds.

解析：选A。A 细节理解题。根据第二段的“A bear sees the nest. He wants to look in it. The bear climbs the tower!”可知，这头黑熊想看巢里面有什么，于是它爬上了这个塔。故选A。

4.What does the underlined word “quit” mean?

A Look.

B Study.

C Help.

D Stop.

解析：选D。D词义猜测题。根据划线部分后面的“until he gets to the top.”可知，尽管有被鸟啄的危险，熊还是爬到了塔顶，因此它没有停(stop)下来。故选D。

5.Where can we read the passage?

A In a dictionary.

B In a word book.

C In a newspaper.

D In a travel map.

解析：选C。C 推理判断题。通读全文可知，本文讲述了熊爬上高塔看鸟巢的故事，应该是一则新闻，可以在报纸中读到。故选C。