Article: London has always been known for its "black fogs". In the winter of 1952, a milky white fog rolled into the city. As the smoke poured into the air, it was so hard to see that people had to walk in front of the buses to guide them. In this way, the most serious air pollution disaster in history began. When it was over, more than 4,000 people had been killed by the thick black smog. New York City has had several London-type smogs since 1950. Each time, 100 to 400 deaths were caused by the smog. Although these smogs were not as deadly as London's, New York City has the worst air pollution problem in the United States. In all the killer smogs, factories and homes poured smoke and fumes into the air from the furnaces. The chemical fumes combined with the water droplets in the fog to form harmful substances. These substances caused the illness of those who breathed the polluted air. Usually, such harmful fumes rise into the upper air and are blown away by the wind. But sometimes there is an unusual weather condition called a temperature inversion. A layer of cold air remains near the ground as smoke and fumes pour into it. This is covered by an upper layer of warm air that acts like a lid. It prevents the polluted cooler air from rising. The harmful fumes pile up and make people ill. The smog may be so thick that airports are closed and chains of collisions occur on the highways. Another type of smog occurs in Los Angeles. Here the weather may be clear and sunny. But stinging eyes and dry coughs show that harmful chemicals fill the air. The smog is due to invisible gases, mostly from automobile exhaust. Because these chemicals are changed by the sun high up in the air, it is called photochemical smog. It contains automobile exhaust fumes and nitrogen oxides changed by the sun's rays. Added to these are sulfur dioxide and other fumes from factories and oil refineries. Photochemical smog is found in many large cities all over the world. Killer smogs don't happen very often, fortunately. But in Beijing, a combination... Question: Why do people call this phenomenon "black fog"? Yes or no, is the answer "It is too thick for people to see something."?
No

(Question)
Article: Alice always wanted to be a singer. Music was the most important thing in her life, but to tell you the truth, she took lessons for years, practiced every day, but in spite of all this, her voice didn't improve. Honestly, it didn't get better, it just got louder. Her teacher finally gave up and stopped the lessons, but Alice refused to quit , and one day she decided to give a concert and invited her mere teacher to attend. The teacher was very worried about what to say after the performance. She knew it would be terrible and it was. She didn't want to tell a lie, but she didn't want to hurt Alice's feelings either. Finally, she got an idea and went backstage to greet her former pupil. "Well," said Alice, "what did you think of my performance?" "My dear," said the teacher, "you'll never be better than you were tonight." Question: What made Alice decide to give a concert? Yes or no, is the answer "She wanted to prove that her teacher was wrong."?
(Answer)
No

Ques: Article: When I was at University I studied very hard. But a lot of my friends did very little work. Some did just enough to pass exams. Others didn't do quite enough. Fred Baines was one of them. He spent more time playing than working in the library. Once at the end of the term, we had to take an important test in chemistry. The test had a hundred questions. Beside each question we had to write "True" or "False". While I was studying in my room the night before the test, Fred was watching TV. Fred usually worried a lot the night before a test. But on that night he looked perfectly calm. Thenhe told me of his plan. "It's very simple. There are a hundred questions and I have to get fifty correct to pass the test. I'll just toss the coin to decide the answers. That way, I'm sure I'll get half the questions right." The next day, Fred came happily into the exam room. As he sat tossing a coin for half an hour he marked down his answers. Then he left, half an hour before the rest of us. The next day, he saw the chemistry professor in the corridor. "Oh, good," he said to the teacher, "Have you got the result of the test?" The teacher reached into his pocket and took out a coin. He threw it into the air, caught it in his hand and looked at it. "I'm terribly sorry, Fred," he said, "You failed!" Question: Which of the following about the chemistry exam is TRUE? Yes or no, is the answer "It in fact took an hour to finish the chemisty exam"?
Ans: No

(Q).
Article: A young woman was driving through the lonely countryside. It was dark and raining. Suddenly she saw an old woman by the side of the road, holding her hand out as if she wanted a lift. "I can't leave her out in this weather," the woman said to herself, so she stopped the car and opened the door. "Do you want a lift?" she asked. The old woman nodded and climbed into the car. After a while, she said to the old woman, "Have you been waiting for a long time?" The old woman shook her head. "Strange," thought the young woman. She tried again. "Bad weather for the time of year," she said. The old woman nodded. No matter what she said, the hitchhiker gave no answer except for a nod of the head or a shrug. Then the young woman noticed the hitchhiker's hands which were large and hairy. Suddenly she realized that the hitchhiker was actually a man! She stopped the car. "I can't see out of the rear screen," she said. "Would you mind clearing it for me?" The hitchhiker nodded and opened the door. As soon as the hitchhiker was out of the car, the terrified young woman raced off. When she got to the next village she pulled up. She noticed that the hitchhiker had left his handbag behind. She picked it up and opened it. She gave a gasp -- inside the bag was a gun. Question: The young woman stopped the car because _ . Yes or no, is the answer "she wanted to help "the old woman" out in the bad weather"?
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No

Ques:Article: Do's and Don'ts in Whale Watching The Department of Fisheries and Oceans has developed guidelines for whale watching in Johnstone Strait,where killer whales are found on a daily basis each summer. It is strongly recommended that vessel operators follow these guidelines for all kinds of whales. * Approach whales from the side, not from the front or the back. * Approach no closer than 100 metres, then stop the boat but keep the engine on. * Keep noise levels down-no horns, whistles or racing of engines. * Start your boat only after the whales are more than 100 metres from your vessel. * Leave the area slowly, gradually moving faster when you are more than 300 metres from the whales. * Approach and leave slowly, avoiding sudden changes in speed or direction. * Avoid disturbing groups of resting whales. * Keep at low speeds and remain in the same direction if travelling side by side with whales. * When whales are travelling close to shore, avoid crowding them near the shore or coming between the whales and the shore. * Limit the time spent with any group of whales to less than 30 minutes at a time when within 100 to 200 metres of whales. * If there is more than one vessel at the same observation spot, be sure to avoid any boat position that would result in surrounding the whales. * Work together by communicating with other vessels, and make sure that all operators are aware of the whale watching guidelines. Question: What is the shortest safe distance from the whales? Yes or no, is the answer "100 metres."?

Ans:
No