The space shuttle Columbia flared and broke up in the skies over Texas on Saturday, February 1,2003, killing the seven astronauts on board in what NASA and President Bush called a tragedy for the entire nation. NASA launched an investigation into the disaster and began searching for the astronauts' remains. It said that although there had been some data failures it was too early to nail down a precise cause. The break-up, 16 minutes before the shuttle was due to land at Kennedy Space Center in Florida, spread possibly toxic debris over a wide swath of Texas and neighboring states. Dramatic television images of the shuttle's _ clearly showed several white trails streaking through blue skies after the shuttle suddenly fell apart. It was almost 17 years to the day that the Challenger shuttle exploded on Jan. 28, 1986, killing all seven astronauts on board. Take-off and re-entry into Earth's atmosphere are the most dangerous parts of a space mission. In 42 years of US' human space flight, there had never been an accident in the descent to Earth or landing. Challenger exploded just after take-off. Rescue teams scrambled to search for the remains of the crew, which included the first Israeli to fly on the shuttle, former combat pilot Col. Ilan Ramon. There were warnings that parts of a vast 120-mile-long corridor of debris could be toxic because of poisonous rocket propellant . "We are not ready to confirm that we have found any human remains," Nacogdoches County Sheriff Thomas Kerrs said. He added that among the roughly 1,000 calls reporting debris, some people said they found remains of crew members. "The Columbia is lost. There are no survivors, Their mission was almost complete and we lost them so close to home. ... America's space program will go on," said a grim-faced Bush in a message broadcast on television, which included condolences to the families of the dead astronauts. The word "descent" in the passage means _ . A) taking off B) landing C) orbiting D) walking down
B
(Question)
History is rich with 'eureka' moments: scientists from Archimedes to Isaac Newton and Albert Einstein are said to have had flashes of inspiration while thinking about other things. But the mechanisms behind this psychological phenomenon have remained unclear. A study now suggests that simply taking a break does not bring on inspiration -- rather, creativity is fostered by tasks that allow the mind to wander. The discovery was made by a team led by Benjamin Baird and Jonathan Schooler, psychologists at the University of California, Santa Barbara. The researchers presented 145 undergraduate students with two 'unusual uses' tasks that gave them two minutes to list as many uses as possible for everyday objects such as toothpicks, clothes hangers and bricks. After the two minutes were over, participants were given a 12-minute break, during which they rested, undertook a demanding memory activity that required their full attention or engaged in an undemanding reaction-time activity known to elicit mind-wandering. A fourth group of students had no break. All participants were then given four unusual-uses tasks, including the two that they had completed earlier. Those students who had done the undemanding activity performed an average of 41% better at the repeated tasks the second time they tried them. By contrast, students in the other three groups showed no improvement. "We've traditionally found that rapid-eye-movement sleep grants creative insight. That allowing the mind to wander does the same is absolutely fascinating. I think they are on to something really interesting here, " says Sara Mednick, a psychologist at the University of California, Riverside. Participants who engaged in the undemanding task did not do any better than others on unusual-uses tasks that they encountered for the first time in the second round. "The implication is that mind-wandering was only helpful for problems that were already being mentally chewed on. It didn't seem to lead to a general increase in creative problem-solving... Inspiration or creativity, according to this passage, comes about when _ . A) your mind is in an "unusual uses" task B) your mind loses itself and hangs about C) you've had a break after hard mind work D) you've thought about something for long
(Answer)
B
Ques: The traditional distinction between products that satisfy needs and those satisfy wants is no longer adequate to describe classes of products. In today's prosperous societies, the distinction has become unclear because so many wants have been turned into needs.A writer, for instance, can work with paper and pencils. These are legal needs for the task.But the work can be done more quickly and efficiently with a word processor. Thus a computer is soon viewed as a need rather than a want. In the field of marketing, consumer goods are classed according to the way in which they are purchased.The two main classes are convenience goods and shopping goods.Two lesser types are specialty goods and unsought goods. It must be emphasized that all of these types are based on the way shoppers think about products, not on the nature of the products themselves. What is regarded as a convenience item in France(wine,for example)should be a specialty goods in the United States. People do not spend a great deal of time shopping for such convenience items as groceries, newspapers, toothpaste, aspirin, and candy. The buying of convenience goods may be done routinely, as some families buy groceries once a week. Such regularly purchased items are called staples. Sometimes convenience products are bought without enough thinking; someone has a sudden desire for an ice cream sundae on a hot day. Or they may be purchased as emergency items. Shopping goods are items for which customers search. They compare prices. quality, and styles, and may visit a number of stores before making a decision.Buying an automobile is often done this way. Shopping goods fail into two classes:those that are recognized as basically the same and those that are regarded as different. Items that are looked upon as basically the same include such things as home appliances, television sets, and automobiles.Having decided on the model desired, the customer is primarily interested in getting the item at the most favorable price. Items regarded as essentially... The example of wine is used to illustrate that _ . A) goods are classified differently in different counties B) the type of a product is determined by its consumers C) Frenchmen often drink but Americans sometimes do D) one product may belong to many types
Ans: B
A young man was walking through a supermarket to pick up a few things when he noticed an old lady following him around. Thinking nothing of it,he ignored her and continued on. Finally, he went to the checkout line, but she got in front of him. "Pardon me," she said, " I'm sorry if my staring at you has made you feel uncomfortable. It's just that you look just like my son who just died recently." "I'm very sorry," replied the young man, "Is there anything I can do for you?" "Yes," she said, "As I'm leaving, can you say 'Goodbye mother'? It would make me feel much better". "Sure," answered the young man. As the old lady was leaving the counter, he called out from behind her, "Goodbye mother!" As he stepped up to the checkout counter and put what he bought on the counter, he saw that his total was $127.5. "How can that be?" he asked, "I only bought a few things!" " Your mother said that you would pay for her." said the clerk. Which of the following would be the best title? A) An Unexpected Meeting at the Supermarket B) A Foolish Mother C) A Total of $ 127.5 at the Supermarket D) A Mother and Her Son
A