The effects of air pollution on natural conditions have been a disturbing problem for many years. Some scientists hold the view that the air inside houses may be more dangerous than the air outside. It may even be one hundred times worse. Most scientists agree that every modern house has some kind of indoor pollution, which can cause a person to feel tired, to suffer eye pain, headache and other problems. Believe it or not, some pollutants can cause breathing diseases of blood and even cancer. What made us feel relieved is that there's growing concern about the problem now. It is true that when builders began constructing houses and offices they did not want to waste energy. they built buildings that prevented or limited the flow of air between inside and outside. For the same purpose, man-made building materials were employed to build houses, which are now known to let out some harmful gases. Facing the serious challenge, scientists have been searching for a way to handle the problem. To everyone's delight, they discovered a natural pollution control system for building--green plants, though they do not really know how plants control air pollution. Scientists suppose that a plant's leaves absorb or take in the pollutants and in exchange gives out oxygen through its leaves and tiny organizations on its roots. Therefore they recommend that all buildings should have one large plant or several small plants inside for every nine square meters of space. Because studies indicate that different plants absorb different chemicals, the most effective way to clean the air is to use different kinds of plants. In conclusion, having green plants inside your house can make it a prettier and healthier place. Why not try? According to scientists, some kind of indoor pollution can be found in _ . A) every old building B) every modern house C) all kinds of houses D) all kinds of offices
B
What does it mean to day that we live in world of persuasion? It means that we live among competing interests. Your roommate's need to study for an exam take priority over pizza. Your instructor may have good reasons not to change your grade. And the object of your romantic interest may have other choices. In such a world, persuasion is the art of getting others to give fair and favorable consideration to our points of view. When we persuade, we want to influence what others believe and how they behave. We may not always prevail --other points of view may be more persuasive, depending on the listener, the situation, and the merits of the case. But when we practice the art of persuasion, we try to ensure that our position receives the attention it deserves. Some people, however, object to the very idea of persuasion. They may regard it as an unwelcome approach to their lives or as a control. In contrast, we believe that persuasion is inevitable--to live is to persuade. Persuasion may be moral or immoral, selfless or selfish, inspiring or discouraging. Persuaders may enlighten our minds or make us hurt. Moral persuasion, however, calls on sound reasoning and is sensitive to the feelings and needs of listeners. Such persuasion can help us apply the wisdom of the past to the decisions we now must make. Therefore, an essential part of education is learning to resist the one kind of persuasion and to encourage and practice the other. Beyond its personal importance to us, persuasion is a need to society. The right to persuade and be persuaded is the basic principle of the American political system. According to the passage, we can infer that _ . A) we can learn how to persuade in school B) only society can benefit from persuasion C) persuasion plays an important role in America D) persuasion is considered to be an inborn ability
C
Q: Recordings of angry bees are enough to send big, tough African elephants running away, a new study says. Beehives -either recorded or real-may even prevent elephants from damaging farmer's crops. In 2002, scientist Lucy King and her team found that elephants avoid certain trees with bees living in them. Today, Lucy wants to see if African honeybees might discourage elephants from eating crops. But before she asked farmer to go to the trouble of setting up beehives on their farms, she needed to find out if the bees would scare elephants away. Lucy found a wild beehive inside a tree in northern Kenya and set up a recorder. Then she threw a stone into the beehive, which burst into life. Lucy and her assistant hid in their car until the angry bees had calmed down. Next,Lucy searched out elephant families in Samburu National Reserve in northern Kenya and put a speaker in a close to each family. From a distance, Lucy switched on the pre-recorded sound of angry bees while at the same time recording the elephants with a video camera. Half the elephant groups left the area within ten seconds. Out of a total of 17 groups, only one group ignored the sound of the angry bees. Lucy reported that all the young elephants immediately ran to their mothers to hide under them. When Lucy Played the sound of a waterfall instead of the angry bees to many of the same elephant families, the animals were undisturbed. Even after four minutes, most of the groups stayed in one place. Lucy is now studying whether the elephants will continue to avoid the sound of angry bees after hearing it several times. She hasn't tested enough groups yet to know, but her initial results were promising enough to begin trials with farmers. She has now begun placing speakers in the fields to see if elephants are frightened away. As mentioned in the passage, Lucy A) works by herself in Africa B) needs to test more elephant groups C) has stopped elephants eating crops D) has got farmers to set up beehives on their farms
A: B
(Question)
Name: Julia Rosetti Email: n1950215@droid.fit.qut.edu.au Location: Brisbane, Australia Age: 18 Sex: Female Drugs: No Alcohol: No Sports/ Activities: I used to do a lot of ballet and stage work, my ambition was to be a professional dancer before I got sick. Nowadays I love to read, and other stuff like that, as well as spending a lot of time with my family and friends. Grades: I finished high school last year, and I haven't started college because I've been sick. But I got subject prizes in three subjects and high as in the rest. Favorite Subject: I loved Music, English, History and Biology. Hard to pick a favorite - they're all so different. Volunteer Work: It all depends on what you call "volunteer". Nothing really official, but I spend a lot of my time working and playing with really sick kids, and they come to me for advice a lot. What My Future Goals Are: I'd either like to go on to do stage work, or work with kids with serious illnesses. I haven't decided which, yet. What I do in My Spare Time: Talk to my friends and my family. Hang around with my hospital friends. Watch TV. Go to the movies when I can. I love going on picnics and other outdoorsy stuff. How I'd Change the World: No question. Cure cancer. _ it forever. Largest Problem: Sometimes, I think it's having too many choices, and having too many expectations and others having too many expectations of _ . And all the implications of this. Why Would I Make a Good Counselor : I really want to help other people. I've made that my life's ambition, to help as many people as I can. Qualifications: I spend a lot of time doing this sort of stuff "unofficially" - I am the Discussion Manager on a discussion list for seriously ill young people. People also write to me because of my homepage, often wanting advice, which I try to give them. What can we infer about Julia Rosetti? A) She is ill now with a cancer. B) She has had an operation. C) She is curing people of cancer. D) She is working in a hospital.
(Answer)
B