Andrew Engel was puzzled. He was sitting in class, but had no idea what the other students were talking about. He had done his homework, paid attention to lectures, and taken note,but nothing was familiar. “Everyone is so much cleverer than I am,” he thought. It was a strange feeling, as he was always a good student in high school.

He felt even more puzzled a few days later. He got lost on his way to his favourite cinema. What’s worse, he began having trouble finding the right words when speaking. He asked, “What’s for dinner, Mom?” after he had just eaten. Poor Andrew, he was only 15!

His parents were worried and took Andrew to see a doctor. A brain scan(扫描）made it clear: Andrew had a malignant brain tumor(恶性脑肿瘤）. It was pressing on the part of the brain that made new memory. He should be operated on as soon as possible. Andrew was scared!

Doctors removed the tumor, but Andrew’s memory was still poor. He was told he would probably never go back to school. Andrew was eager to enter a university, but it seemed that his dream wouldn’t come true.

“Even though they told me this, I knew I wanted to go back to school, ”Andrew said, “I wanted to get my memory back.”

Andrew began by auditing(旁听) an English class at a nearby school. In class, he took notes carefully and read his notes several times a day, then typed them again and again. He studied twelve hours a day, seven days a week. He worked ten times harder than other students. In 2007, at age 29, he graduated from a local university. Six months later, Andrew found a job.

Ever since Jonathan had set up the house in Compton Street, he had looked after it very carefully. Before he left the house in the morning, he carefully closed all the doors downstairs, opened some windows to let the air in and locked the front gate. _______ Jonathan did was tidy and orderly.

One summer evening Jonathan returned home _______ at five minutes to seven exactly. When he opened the front gate; he immediately noticed something strange. There was a heavy footprint in the soil in one of the flower beds. Jonathan was just going to blame （责怪） the milkman or the postman when he noticed that one of the curtains in the front room downstairs was not in its usual place. That was too strange! Jonathan. _______ left anything out of place.

He walked up to the front door and opened it quietly. He listened carefully for a few minutes, but he could hear nothing. The front room door was half open. Jonathan thought about it carefully,. _______ if he had forgotten to close it that morning. He had never forgotten before. He looked inside the room. The shadow （影子） of a man was clearly reflected on （映在） the far wall in the evening sunlight. He had been standing _______ the door since Jonathan's return. Jonathan shut the door quickly and turned the key. Then he picked up the telephone in the hall and called the police.

The thief tried to climb through a window to get out, but Jonathan had expected that. He _______ him with his umbrella, holding it as a sword （剑）. Three minutes later the police arrived there. Jonathan was a little angry that he had to have dinner later than usual, but on the whole he felt quite pleased with himself.

Over the past 20 years, the Internet has greatly influenced our world and changed our lives. The Internet makes it much e    44     for people to search for information. For example, when we write a history report, we don’t have to go to the library. We can find information about world leaders and historical events on different websites. Everything we want to know can be found at the click of a button.

The Internet helps us to stay connected to family, friends and the world around us. Not long ago, we wrote letters by h    45     and waited weeks for a reply. Today, when we use QQ, we send and receive messages across thousands of miles in a few seconds.

The Internet gives us a way to express our opinions in p    46    . We share interesting ideas with other people on QQ, Baidu Tieba, blogs or forums(论坛). If we dislike the food at school, we can discuss it in the school’s forum or in the Tieba of our own class.

A    47     the Internet has made our world better in many ways, in some ways it can be a bad influence. There is a lot of false information on the Internet. It is important not to believe a    48     we read on the Internet.

In addition, many teenagers choose to keep in touch with each other online instead of meeting face-to-face. People w    49     that this harms their social communication skills.

Some teenagers spend too much time playing Internet games. They may lose focus on their studies.       

There are millions of interesting sites to visit and so many wonderful things to do online. How could we live without the Internet nowadays? But remember to use the Internet properly and wisely. Try to let the Internet be your good s    50    , not your bad master!

Have you seen the Hollywood movie Sherlock Holmes? Holmes is a character created by British writer Sir Arthur Conan Doyle. His books were so popular that Holmes soon became “the most famous detective in the world”. What do you need to be a good detective? The movie Sherlock Holmes will show you.

In this movie, this great detective faces a dangerous man, Lord Blackwood. Together with his best friend Dr. Watson, Holmes stops Blackwood’s plan to control the world with black “magic”.

Most of us are not as intelligent as Holmes. But we can also work out mysteries on our own. All we have to do is to follow some simple rules.

No matter how smart he or she is, the most important quality for a detective is being good. In the movie, Lord Blackwood and Sherlock Holmes are both very intelligent. The difference is that Lord Blackwood is a bad man and he does bad things. Holmes can beat him on the side of justice.

Every bad man tries to cover up what he did. But not all things can be covered up easily. A good detective can discover clues hidden at crime scenes with sharp eyes. For example, Holmes can simply look at a man’s footprints and quickly find out his personal information like age and habits.

Even though Holmes has knowledge about many subjects, such as chemistry, botany(植物学）and anatomy, he still needs Dr. Watson’s help to fight with him. We should also have someone to help you, especially if you don’t know as much as Holmes.

A good detective never jumps to conclusions. When all the necessary clues are put together, you’d better think carefully. If you can’t work it out, don’t be afraid. Just take a deep breath and concentrate on thinking. Logic can help you discover missing clues.