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Why does the Leaning Tower of Pisa in Italy lean? It leans because of a mistake. It has leaned almost since the day the builders b    1  it.
In 1774, the people of Pisa in Italy wanted to build a bell tower. They wanted the tower to be the m    2  beautiful bell tower in Italy. The city needed a bell tower because the church(教堂) did not have o    3    . As soon as the first floor of the building was finished, the tower started to lean. Builders t    4    to make the building straight again as they added more floors, but the leaning tower got w   5    as the tower grew. It took about 180 years to finish the tower. Today, the leaning tower has eight f    6    It is 54.5 meters t    7    . And it leans almost 4 meters to one s    8   . The tower is also sinking(下沉) into the g    9  on which it was built. Every year, the tower leans a    10  1.7 cm.

There is a zoo named Zhongshan in our city. There are many animals. Some animals are very friendly. But some other animals are not. Tigers,  lions and some snakes are dangerous(危险的). That’s why they must be in cages(笼). But I don’t think it’s good for animals to be in cages. They need to be free. The animals in cages cannot be happy.

Tigers usually live in forests(森林)and mountains(高山). They are strong and can run very fast(快). They run after and eat small animals like rabbits and deer(鹿),  but now they are in small cages. They have nothing to do every day. So they walk around in the cages,  and they want to come out. When they are tired,  they sleep. I am kind of sorry for them.

1.Why do tigers ,  lions and snakes have to stay in cages?

A. Because they are very dangerous.

B. Because they are very friendly.

C. Because they need to be free.

D. Because they like to be in cages.

2.Where do tigers usually live?

A. In cages.

B. In forests and mountains.

C. In the zoo.

D. In small rooms.

3.What do tigers usually do in forests?

A. They have nothing to do.

B. They walk around.

C. They want to sleep.

D. They run after and eat small animals.

4.Tigers want to ________ when they are in cages.

A. come out                         B. eat animals

C. run fast                             D. be friendly to people

5.Why does the writer feel sorry for the tigers in cages?

A. Because the writer thinks tigers need to eat food.

B. Because the writer thinks tigers are dangerous.

C. Because the writer thinks tigers need to be free.

D. Because the writer thinks tigers are very happy.

阅读短文，选择正确的答案。
A mother and her young son get into a bus in a small city and sit down. The bus conductor comes to them for their money. The mother says:“I want one ticket to the zoo ” and gives him one Yuan. The conductor looks at the small boy for a few seconds and then says to him, “How old are you, young man?” The mother begins to speak, but the conductor stops her. The boy says: “I am four at home, and two in the buses.” At last the mother has to take fifty fen out of her pocket and gives it to the conductor.
【小题1】Why does the conductor look at the small boy for a few seconds ?