Global warming happens when greenhouse gases trap heat and light from the sun in the earth's atmosphere, which increases the temperature. This is like when heat is trapped in a car. On a hot day, the car gets hotter when it is out in the parking lot. This is because the heat and light from the sun can get into the car, by going through the windows,but it can't get back out. This is what the greenhouse effect does to the earth .The heat and light can get through the atmosphere, but it can't get out As a result,the temperature rises. Sometimes the temperature can change in a way that helps us. The greenhouse effect makes the earth appropriate for people to live on Without _ ,the earth would be freezing,or it would be burning hot. It would be freezing at night because we would not get the sun's heat and light .During the day, especially during the summer, it would be burning because the sun would be up with no atmosphere to filter it,so people,plants,and animals would be exposed to all the light and heat. Although the greenhouse effect makes the earth able to have people living on it,if there gets to be too many gases,the each can get unusually warmer, and many plants,animals.and people will die. Plants would die because they would not be able to take the heat .This would cause us to have less food to eat, and it would also limit the food that animals have. With less food for the animals that we need to survive we would even have less food. Gradually, people,plants,and animals would all die of hunger. People are doing many things to try to stop global warming .One thing is carpooling--driving with someone to a place that you are both going to. Another thing is being more careful about leaving electrical devices turned on. Now, more people are even riding buses or bikes to lower the amount of greenhouse gases in the air .Although adults do many things to help stop global warming, kids call do just as much. What is the effect of atmosphere? A) IT only traps the heat of the sun. B) It does great harm to humans. C) It makes the earth neither to hot nor too cold. D) It prevents all the light from the sun shining on the earth.
C


(Question)
We start finding things laughable -- or not laughable -- early in life. An infant first smiles at approximately eight days of age. In his book Beyond Laughter, psychiatrist Martin Grotjahn says that the earlier infants begin to smile and laugh, the more advanced their development is. Studies revealed   that children who did not develop these responses "developed a schizophrenic psychosis   in later life, or simply gave up and died". Between the ages of six months and one year, babies learn to laugh for essentially the same reasons why they will laugh throughout their lives, says Dr. Jacob Levine. He says that people laugh to express mastery over an anxiety. Adult laughter is more subtle  , but we also laugh at what we used to fear. The feeling of achievement, or lack of it, remains a leading factor. Giving a first dinner party is an anxious event for newly-weds. Will the food be good? Will the guests get along? All goes well; the party is over. Now they laugh freely. Their pleasure is from recalling the evening's activities. They couldn't enjoy the second pleasure without the first. Laughter is a social response caused by signals. Scientists have not determined a brain center for laughter, and they are puzzled by patients with certain types of brain damage who go into laughing with no apparent reason. The rest of us require company and a reason to laugh. Another reason why laughter is pleasurable is because of the physical feeling involved. According to Dr. Levine, we can measure our adjustment to the world by our capacity   to laugh. When we are secure about our abilities, we can make fun of our weakness. If we can laugh through our anxieties, we will not be overpowered   by them. The ability to laugh starts early, but it takes a lifetime to perfect. Says Dr. Levine, "When social relationships are mastered, when individuals have mastered... a peaceful relationship with themselves, then they have ... the sense of humor." And then they can throw back their heads and laugh. Which of the following statements can be inferred from the passage? A) Smile and laugh show your ability to overpower weakness and anxieties. B) The more you laugh and smile, the more likely you will be to succeed. C) Scientists are more likely to go into laughing with no apparent reason. D) Mastering social relationships means having a sense of humor.
(Answer)
A


Ques:It all started at the beginning of this term. At first, Carmen wasn't really sure what was happening. In class, she had tosquint  to see the blackboard clearly. As it got worse, she became more and more worried. It was important for her to see the notes and homework the teacher wrote on the board. In class, she asked for a desk that was closer to the blackboard. One day, her teacher said, "Carmen, I've noticed you squinting a lot. Are you having trouble seeing the board?" Carmen shook her head. "I'm fine, Mrs. Cruz." At home, she had to sit closer and closer to the television. Her mother noticed her squinting as she watched her favorite shows. "Tomorrow I will go to see a doctor," she said firmly. Three days later, Carmen had new glasses. She was told to wear them all the time. "All of the kids at school will think I am anerd ," she said. "You look just as beautiful with those glasses on as you do without them," her mother said. But Carmen didn't believe her. The next day, Carmen kept the glasses in her pocket as she walked into the schoolyard. Suddenly, she heard her friend Theresa shout. "What's wrong?" she asked. "My silver ring is gone!" Theresa cried. Carmen could tell that Theresa was very upset. They all looked for the ring in the grassy area of the playground. Carmen realized that she could search better if she could see better. She took the glasses out of her pocket and put them on. Everything looked so different! So clear! And aglimmer   of silver caught her eye. "Here it is," she shouted. "Thanks Carmen," Theresa said. "I didn't know you wore glasses. They look great!" "Thanks," Carmen replied shyly. As they walked back toward the school building, two more girls praised her glasses. Carmen smiled. "Maybe wearing glasses won't be so bad after all," she thought. The purpose of the text is to tell readers  _  . A) how to protect their eyes B) never to make fun of others C) things aren't always as bad as we expect D) it is necessary to give a hand to those in trouble

Ans:
C