单选题Learning to use computer is getting easier all the time because programs are designed to be convenient and are becoming readily __________ to computer users.

单选题A．Itwilldestroythenaturalenvironment.B．Thequalityofourlifeisdecreased.C．Theworld'spopulationisapproachingcertainlimitsongrowth.D．Naturalresourceswillbeusedupinafewyears.

单选题In most urban and suburban areas of the world, sick people go to a doctor for ______.

单选题It was probably around 3,000 years ago that people first began making things to help them measure the passage of time. Having noticed that shadows move around trees as the sun moves across the sky, someone drew a circle and put a stick in the center. As the sun passed overhead, people could tell which part of the day it was by noticing which mark on the circle the shadow fell across. These circles were called "sundials". latter, they were made of stone and metal to last longer. Of course, a sundial did not work at night or on cloudy days, so men kept inventing other ways to keep track of time. After glass blowing was invented, the hourglass came into use. An hourglass is a glass container for measuring time in which sand moves slowly from the top half to the bottom in exactly one hour. The hourglass is turned over every hour so the sand could flow again. One of the first clocks with a face and an hour hand was built for a king of France and placed in the tower of his palace. The clock did not show minutes or seconds. Since there were no planes or trains to catch, people were not worried about knowing the exact time. Gradually, clocks began to be popular and unusual. One clock was in the shape of a cart with a horse and driver. One of the wheels was the face of the clock. Today, scientists have invented clocks that tell the correct time to a split second. Many electric clocks are often made with built-in radios, which can sometimes be set to turn on automatically. Thus, instead of an alarm ringing in your ear, you can hear soft music playing when it is time to get up. Some clocks will even start the coffee maker!

单选题 Questions 16 to 18 are based on the passage you have just heard.

单选题Being ignorant of the law is not accepted as an ______ for breaking the law.A) excuseB) intentionC) optionD) approval

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单选题Ugly Faces Are More Memorable The old saying of never forgetting a pretty face might be untrue as psychologists believe beautiful people are less likely to be recognized. A new study suggests that attractiveness can actually prevent the recognition of faces, unless a pretty face is particularly distinctive. German psychologists think the recognition of pretty faces is distorted (扭曲) by emotions. Scientists at the University of Jena, Germany, discovered that photos of unattractive people were more easily remembered than pretty ones when they showed them to a group of people. Researchers Holger Wiese, Carolio Altmann and Stefan Schweinberger from the university, wrote in their study: "We could show that the test subjects were more likely to remember unattractive faces than attractive ones, when the latter didn"t have any particularly noticeable traits." For the study, which was published in science magazine Neuropsychologia , the psychologists showed photos of faces to test subjects. Half of the faces were considered to be more attractive and the other half as less attractive, but all of them were being thought of as similarly distinctive looking. The test subjects were shown the faces for just a few seconds to memorize them and were shown them again during the test so that they could decide if they recognized them or not. The scientists were surprised by the result. "Until now we assumed that it was generally easier to memorize faces which are being perceived as attractive, just because we prefer looking at beautiful faces," Dr. Wiese said. But the study showed that such a connection cannot be easily sustained. He assumes that remembering pretty faces is distorted by emotional influences, which enhance the sense of recognition at a later time. The researchers" idea is backed up by evidence from EEG-recordings (脑电图记录) which show the brain"s electric activity, which the scientists used during their experiment. The study also revealed that in the case of attractive faces, considerably more false positive results were detected. In other words, people thought they recognized a face without having seen it before. "We obviously tend to believe that we recognize a face just because we find it attractive." Dr. Wiese said.

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单选题More surprising, perhaps, than the current difficulties of traditional marriage is the fact that marriage itself is alive and (67) . As Skolnick notes, Americans are a marrying people: (68) to Europeans, more of us marry and we marry at a younger age. (69) , after a decline in the early 1970s, the (70) of marriage in the United States is now (71) . Even the divorce rate needs to be taken in this pro-marriage context — some 80 percent of (72) individuals remarry. (73) , marriage remains, by far, the preferred way of life for the vast majority of people in our society. What has changed more than marriage is the nuclear family. Twenty-five years ago, the (74) American family consisted of a husband, a wife, and two or three children. (75) , there are many marriages in which couples have decided not to have any children. And there are many marriages where at (76) some of the children are from the wife's (77) marriage, or the husband's, or both. Sometimes these children spend all of their time with one parent from the 78 marriage; (79) they are shared between the two former parents. Thus, one can find the very type of family arrangement. There are marriages (80) children; marriages with children from only the (81) marriage; (82) with "full-time" children from the present marriage and "part-time" children from former marriages. There are stepfathers, stepmothers, half-brothers, and half-sisters. It is not all that (83) for a child to have four parents and eight grandparents! These are (84) changes from the traditional nuclear family. (85) even so, even in the midst of all this, there (86) one constant — most Americans spend most of their adult lives married.

单选题All our preparations went _________because the exams were called off.

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单选题A high negative inn count is likely to be found ______.

单选题Passage Two Questions 29 to 31 are based on the passage you have just heard.

单选题The phrase "such powerful effects" in Line 3 of Paragraph 3 refers to ______.

单选题Can you give me even the ______ clue as to where her son might be? A. simplest B. slightest C. least D. utmost