Last Sunday afternoon, I was having dinner in a restaurant when my friend Poor came in. Poor is working in a bank and is quite rich, but he is always borrowing money from his friends and never pays it back. Poor saw me and came to sit at my table. He had never borrowed any money from me. When he was eating, I asked him to lend me two dollars. To my surprise, he gave me the money at once.“I have never borrowed any money from you,”Poor said,“So you can pay for my dinner.”

    A university professor recently made several tests with different animals to find out which was cleverer than other animals.

    In one test the professor put a monkey in a room where there were several small boxes. Some boxes were inside other boxes. One small box had some food in it. The professor wanted to watch the monkey and to find out how long it would take the monkey to find the food. The professor left the room. He waited a few minutes outside the door. Then he got down on his knees and put his eye to the keyhole (钥匙孔). What did he see? To his surprise, he found himself looking into the eye of the monkey. The monkey was on the other side of the door and looked at the professor through the keyhole.

    Death of science icon(巨匠)

    In modern history, there has perhaps never been a scientist as well-known as Stephen Hawking. Whether he was educating the world with his knowledge of the universe（宇宙）, or making fun of himself in TV shows like The Simpsons, it's hard to imagine what the world will be like but now Hawking is no longer in it.

    On March 14, the British physicist passed away at his home in Cambridge, England. Since then, many people have expressed their sadness in public, including British computer scientist Tim Berners-Lee, who invented the World Wide Web. “We have lost a great mind and a wonderful spirit,” Berners-Lee wrote.

    Hawking was an icon for many reasons, but he will be best remembered for his work in the field of science. Building on German scientist Albert Einstein's work, Hawking explained his belief that space started with the Big Bang, and will end with Black Holes. This idea kicked off a series of scientific studies including into the origin of the universe itself.

    Besides his work in science, he also managed to overcome many difficulties in his personal life. While studying at Cambridge University, he got a serious illness at the age of 21. His illness left him disabled and he was told he only had a short time to live. However, as we all know, he went on to become one of the greatest minds that the world has ever known.

    Hawking leaves behind a great legacy(遗产). His book A Brief History of Time: From the Big Bang to Black Holes that came out in 1988, became one of the world's best-sellers. He may no longer be with us, but Hawking will continue to inspire the world for generations to come. As he once said himself, “Look up at the stars and not down at your feet.”

根据短文内容，判断句子正、误。

    A dentist (牙医) was starting his in work in the morning. Suddenly a man ran in. His face was red and he could only say "Quick! Quick!" The dentist thought he must be very sick. His assistant(助手) helped to make man sit in a chair. The dentist gave the man some medicine to make him sleep. Then, he looked into the man's mouth and pulled out all the bad teeth. When the man woke up, he said in a low voice, "Quick, doctor, quick."

    "It's all right now," the dentist told him. "It's over."

    "You don't understand," said the man," I came to tell you that your house is on fire."

    Recently, a video story has spread among people.

    James Anthony has cleaned the halls of Hickerson Primary School for 15 years. Although he is deaf, he never complains (抱怨). Instead, he greets every child and teacher with smile. Teachers and children love him very much and call him Mr. James.

    On the day Anthony turned 60, the school wanted to give him a very special surprise. That day when Anthony walked into a classroom, a group of children started to sign (打手势) and sing "Happy Birthday" to him. Anthony started smiling as usual. Then his jaw (下巴) dropped open and he laughed for joy as he realized what was going on. A few teachers led the kids through the whole song as Anthony watched. A wide smile was on his face. As they finished, tears came out from his eyes.

    Scott, secretary (秘书) of the school said, "The children love and respect Mr. James. They give him high fives in the halls, and he even teaches them sign language. Today he has put smiles on faces all around the world."