Have you ever posted your photos on the Internet? Would you mind if people cut part of your photo, perhaps your face, and paste（粘贴）it into other photos as a joke? Most people would not like to be made fun of in this way. However, it is not uncommon for people to find such pictures of themselves on the Internet.

We are living in an age of information explosion. People work, play and communicate with others over the Internet. However, we must always bear in mind that some people may use others personal information for unpleasant purposes. A good example of this is what happened to a 25-year-old man. He received an e-mail that appeared to be from his bank, asking for his bank details. However, after he sent his account(账户) number to the sender, he found that money was  stolen out of his bank by online criminals.

This story warns us and reminds us never to tell strangers information such as our real names, parents names, telephone numbers or home addresses. Remember to remove any private information, like your photos, after using another person's computers. Also remember not to give out unnecessary but important information when filling in online forms. We need to learn to keep our private information safe. This is the key to protecting ourselves in a world where the Internet is becoming more and more important.

49. The underlined word ‘criminals' means _______in Chinese.

50. What does this passage teach us?

        A. Never give any information to anyone online.

        B. Only give some necessary but real information to the strangers online.

        C. Only give some unnecessary and unimportant information when filling in a form.

        D. Never give your personal information to strangers online.

51. How did the 25-year-old man lose his money?

        A. The bank lost his details and account number.

        B. The money was stolen from the bank.

        C. He gave his personal information to online criminals.

        D. It was stolen from him as he returned from the bank.

52. According to the passage, which of the following is not correct?

        A. People do not want their pictures to be cut and pasted into others just for fun.

        B. We are living in a world of information.

        C. We should learn how to communicate with others on the Internet in a safe way.

        D. We must be careful in daily life, because some criminals will get closer to us.

Many animals know their food because they see it．So do humans．When you see an apple or a piece of chocolate，you know these are things __1__ you can eat．You can also choose your food in other ways．You may like it because it smells good or it __2__ good．Different animals choose their food in different __3__．A few animals depend on only one of their ways，__4__ most animals use more．

Although there are many different types of food，some animals __5__ their lives by eating only one type．The panda cats only bamboo．A kind of white butterfly（蝴蝶）will stay on the leaves of a cabbage，even though there are __6__ of other vegetables．However，most animals have more various（各种各样的）__7__．The bear eats fruits and fish．The fox eats small animals and fruits．The diets of these animals will be __8__ depending on the season．

We often eat food because we __9__ it but not because it is good for us．In France and Britain，people eat food with too much sugar．This makes them fatter，which is _10__ for their health．So choosing the right food has become an area of study in modern life．

1．A．what                     B．that                     C．who                             D．how

2．A．sounds                  B．feels                    C．tastes                     D．gets

3．A．minds                    B．ways                   C．interests                 D．hearts

4．A．when                    B．because               C．If                          D．but

5．A．find                       B．save                    C．spend                  D．waste

6．A．much                    B．lot                       C．plenty                    D．type

7．A．risks                     B．diets（饮食）        C．features                 D．lives

8．A．main                      B．different               C．delicious                D．same

9．A．dislike                   B．suit                      C．make                     D．like

10．A．important              B．good                    C．gentle                    D．bad

“Mum, I want to make you a bet,” I said. “If I go a whole year without TV, will you give me a hundred dollars?”　　
“Well, if you can   1  do it, …”
“Of course I can,” I replied, trying to convince   2 .
In fact, all this started from my   3  of a picture in the newspaper. I couldn’t bear to look at that boy. He said that he had   4  one year without TV for a hundred dollars,   5 me with mocking eyes. It seemed he was saying, “I did it,   6  you can’t!”. I glared at the boy’s face.
That year I did a lot of things. For example, my father taught me to   7 , which became my favorite sport.   8  winter afternoons snowball wars with my neighbors offered daily drama. I went on bike trips with my friends and swam as much as a fish.　　
It was unbelievable how much   9  I had without TV. I learned so many new games. I guess the   10  thing I learnt, though, was self-motivation(上进心).　　
I started to do my homework. I went from a D student to an A student within a couple of   11 .　　
I used to   12  reading if there were no   13 , but now I began to read and enjoy it. I could arrange off all the pictures just the way I wanted them—my own little TV, right   14  my head!
I’m surprised what I did. I got a lot more from the   15  than just the 100 dollars!