A train stops at a station(车站). A young man wants to come out，but it is raining. A boy is standing under a big umbrella. The young man says to the boy，"Can you go and buy us two hamburgers，one for you and one for me？Here are two dollars(美元). " "Great！" says the boy and he goes to buy hamburgers. After some time，the boy is back. He is eating a hamburger. "Where is my hamburger?" asks the young man. "Oh，there is only one(只有一个) hamburger left(剩下). So I'm eating mine. Here is your dollar，"the boy says.

    Sam is a good boy. He is tall and fat. He likes sports. In spring, he flies kites in the park. In summer, he plays football with his friends under the tree. In autumn, he goes fishing with his Dad in the lake. In winter, he plays snow with his pupils at school. He is happy each day.

    Ben was a funny boy. He was not good at his studies at school. His mother was very worried about him.

    "Why don't you study hard at school?" said his mother.

    "I'm sorry, mum." Ben answered, "If you buy me a computer, I can do my homework much better."

    "Really?" said his mother. "Then tomorrow I'll buy a computer for you."

    The next day, the mother and the son went to a shop. "Can I help you?" the salesgirl asked them. "Yes, I want a computer." Ben answered, "And I want it to do homework for me."

⑴⑵⑶判断正误；⑷⑸根据短文内容，补全句子。

    One day, a crocodile(鳄鱼)swims in the river. He sees a monkey. The monkey plays in a tree on the bank(岸边). The crocodile swims near the monkey and says, "Hey, little monkey! Do you want to eat bananas? "The monkey answers. "Yes. Where are they?" "On the other bank of the river." "But how can I get there? I can't swim." "I can take you there." So the monkey jumps onto the crocodile's back. In the centre (中心)of the river, the crocodile says to the monkey,"Haha…There are no bananas on the bank. You're foolish(愚蠢的). I want to eat your heart(心脏)." "But I put my heart in the tree. Let's go back to take it." So the crocodile swims back. When they swim near the bank, the monkey jumps up into the tree quickly(迅速地).

    Our future on Earth looks very bad. We are throwing rubbish on our land. We can't breathe the air. The sea is dirty, too. I visit some relatives recently in a small village. They grow their own food. They're not rich, but they are happy and healthy. We should close some factories, because they are producing useless products. That would reduce (减少) rubbish and air pollution. We should recycle more. and improve (提高) public transport. Overpopulation (人口过多) is a big problem in big cities. We should give up useless factories and get back to a simple way of life.