A: I feel rather sick this morning. I don"t think I can concentrate on the work. B:______

A: Please remember me to your parents. B: ______

The night is not what it was. Once, the Earth was cast half in shadow. Then came fire, candle, and light bulb, gradually drawing back the curtain of darkness. But a brighter world has its drawbacks. An estimated 30 percent of outdoor lighting—plus even some indoor lighting—is wasted. Inefficient lighting costs U. S. about ＄10. 4 billion a year, according to Bob Gent of the International Dark-Sky Association, a nonprofit that aims to control light pollution. Last year in Sydney, an estimated 2. 2 million Australians switched off their lights during “Earth Hour”, briefly reducing that city’s energy use by more than 10 percent. Motivated by such trends, more than two dozen cities worldwide went dim on March 29 this year in an hour-long demonstration. A number of groups are trying to measure light pollution and assess its effects on the environment in the hope that people will reduce their own contribution to the problem. Scientists are trying to report how many stars we can see. In dark rural areas, about 2, 000 stars are typically visible at night, compared with“maybe five”in a bright city square—and about 5, 000 in centuries past. People who are working while others are star-gazing may face the greatest risks. Nighttime exposure to white light can cause the growth of tumors (肿瘤) , experiments show. Two decades of research indicate that women who work night shifts have unusually high rates of breast cancer.

This video may be freely reproduced______commercial promotion or sale.

______, we went out for a swim in the lake.

Customer: ______.Waiter: I"m sorry. Didn"t you order fried shrimp? Customer: I ordered fried chicken. Waiter: Oh, all I heard was fried shrimp. Let me have kitchen redo this for you.

I have made a(n) ______for you to see the doctor at 8 o"clock tomorrow.

A: Gosh! Our luggage is overweight. B: Relax. The customs officer wouldn"t be bothered by the extra one or two pounds. A; ______

Lead deposits, which accumulated in soil and snow during the 1960"s and 70"s, were primarily the result of leaded gasoline emissions originating in the United States. In the twenty years that the Clean Air Act has mandated unleaded gas use in the United States, the lead accumulation worldwide has decreased significantly. A study published recently in the journal Nature shows that air-borne leaded gas emissions from the United States were the leading contributor to the high concentration of lead in the snow in Greenland. The new study is a result of the continued research led by Dr. Charles Boutron, an expert on the impact of heavy metals on the environment at the National Center for Scientific Research in France. A study by Dr. Boutron published in 1991 showed that lead levels in arctic(北极的) snow were declining. In his new study, Dr. Boutron found the ratios of the different forms of lead in the leaded gasoline used in the United States were different from the ratios of European, Asian and Canadian gasolines and thus enabled scientists to differentiate(区分) the lead sources. The dominant lead ratio found in Greenland snow matched that found in gasoline from the United States. In a study published in the journal Ambio, scientists found that lead levels in soil in the Northeasten United States had decreased markedly since the introduction of unleaded gasoline. Many scientists had believed that the lead would stay in soil and snow for a longer period. The authors of the Ambio study examined samples of the upper layers of soil taken from the same sites of30 forest floors in New England, New York and Pennsylvania in 1980 and in 1990. The forest environment processed and redistributed the lead faster than the scientists had expeeted. Scientists say both studies demonstrate that certain parts of the ecosystem(生态系统) respond rapidly to reductions in atmospheric pollution, but that these findings should not be used as a license to pollute.

Less than 40 years ago in the United States, it was common to change a one-dollar bill for a dollar"s worth of silver. That is because the coins were actually made of silver. But those days are gone. There is no silver in today"s coins. When the price of the precious metal rises above its face value as money, the metal will become more valuable in other uses. Silver coins are no longer in circulation because the silver in coins is worth much more than their face value. A silver firm could find that it is cheaper to obtain silver by melting down coins than by buying it on the commodity markets. Coins today are made of an alloy of cheaper metals. Gresham"s Law, named after Sir Thomas Gresham, argues that "good money" is driven out of circulation by "bad money". Good money differs from bad money because it has higher commodity value. Gresham lived in the 16th century in England where it was common for gold and silver coins to be debased. Governments did this by mixing cheaper metals with gold and silver. The governments could thus make a profit in coinage by issuing coins that had less precious metal than the face value indicated. Because different mixings of coins had different amounts of gold and silver, even though they bore the same face value, some coins were worth more than others as commodities. People who dealt with gold and silver could easily see the difference between the "good" and the "had" money. Gresham observed that coins with a higher content of gold and silver were kept rather than being used in exchange, or were melted down for their precious metal. In the mid-1960s when the U. S. issued new coins to replace silver coins, Gresham"s law went right in action.

AB*Employeeswithintheorganizationhaveopportunitiesforadditionalsalaryadvancement.

Wang: I"ve got an appointment. I"m going to meet a friend in London at 3 p. m. It"s already a quarter past ______. David: I"m going to London. I can give you a lift if you like. Wang: Could you really? That would be great.

I can"t tell you how______I am to you for having listened to me.

A: Good morning, madam. I wonder if you could spare me a few minutes of your time? B: ______ A: Well, actually I represent the New British Encyclopedia. B: Oh, not today. Thank you!

Thirty-two people watched kitty Genovese being killed right beneath their windows. She was their neighbor. Yet none of the 32 helped her. Not one even called the police. Was this in gunman cruelty? Was it lack of feeling about one"s fellow man? "Not so", say scientists John Barley and Bib Fatane. These men went beyond the headlines to probe the reasons why people didn"t act. They found that a person has to go through two steps before he can help. First he has to notice that is an emergency. Suppose you see a middle-aged man fall to the side-walk, is he having a heart attack? Is he in a coma from diabetes? Or is he about to sleep off a drank? Is the smoke coming into the room from a leak in the air conditioning? Is it "steam pipes", or is it really smoke from a fire? It"s not always easy to tell if you are faced with a real emergency. Second, and more important, the person faced with an emergency must feel personally responsible. He must feel that he must help, or the person won"t get the help he needs. The researchers found that a lot depends on how many people are around. They had college students in to be "tested". Some came alone. Some came with one or two others. And some came in large groups. The receptionist started them off on the "tests". Then she went into the next room. A curtain divided the "testing room" and the room into which she went. Soon the students heard a scream, the noise of file cabinets filling and cry for help. All of this had been pm-recorded on a tape-recorder. Eight out of ten of the students taking the test alone acted to help. Of the students in pairs, only two out of the ten helped. Of the students in group, none helped. In other words, in a group, Americans often fail to act. They feel that others will act. They, themselves, needn"t. They do not feel any direct responsibility. Are people bothered by situation where people are in trouble? Yes, scientists found that the people were emotional, they sweated, they had trembling hands. They felt that other person"s trouble. But they did not act. They were in a group. Their actions were shaped by the actions of those they were with.

At some time in your life you may have a strong desire to do something strange or terrible. However, chances are that you don"t act on your impulse, but let it pass instead. You know that to commit the action is wrong in some way and that other people will not accept your behavior. Perhaps the most interesting thing about the phenomenon of the behavior is how it can change over the years within the same society, how certain behavior and attitudes once considered taboo can become perfectly acceptable and natural at another point in time. Topics such as death, for example, were once considered so upsetting and unpleasant that it was a taboo to even talk about them. Now with the publication of important books such as On Death and Dying and Learning to Say Goodbye, people have become more aware of the importance of expressing feelings about death and, as a result, are more willing to talk about this taboo subject. One of the newest taboos in American society is the topic of fat. Unlike many other taboos, fat is a topic that Americans talk about constantly. It"s not taboo to talk about fat; it"s taboo to be fat. The "in" look is thin, not fat. In the work world, most companies prefer youthful-looking, trim executives to sell their image as well as their products to the public. The thin look is associated with youth, vigor and success. The fat person, on the other hand, is thought of as lazy and lacking in energy, self-respect. After all, people think, how can people who care about themselves, and therefore the way they look, permit themselves to become fat? In an image-conscious society like the U.S., thin is "in", fat is "out".

The Supreme Court"s decisions on physician-assisted suicide carry important implications for how medicine seeks to relieve dying patients of pain and suffering. Although it ruled that there is no constitutional right to physician-assisted suicide, the Court in effect supported the medical principle of "double effect," a centuries-old moral principle holding that an action having two effects--a good one that is intended and a harmful one that is foreseen--is permissible if the actor intends only the good effect. Doctors have used that principle in recent years to justify using high doses of morphine to control terminally ill patients" pain, even though increasing dosages will eventually kill the patient. Nancy Dubler, director of Montefiore Medical Center, contends that the principle will shield doctors who "until now have very, very strongly insisted that they could not give patients sufficient medication to control their pain if that might hasten death." George Annas, chair of the health law department at Boston University, maintains that, as long as a doctor prescribes a drug for a legitimate medical purpose, the doctor has done nothing illegal even if the patient uses the drug to hasten death. "It"s like surgery," he says. "We don"t call those deaths homicides because the doctors didn"t intend to kill their patients, although they risked their death. If you"re a physician, you can risk your patient"s suicide as long as you don"t intend their suicide." On another level, many in the medical community acknowledge that the assisted-suicide debate has been fueled in part by the despair of patients for whom modern medicine has prolonged the physical agony of dying. Just three weeks before the Court"s ruling on physician-assisted suicide, the National Academy of Science (NAS) released a two-volume report, Approaching Death: Improving Care at the End of Life. It identifies the undertreatment of pain and the aggressive use of "ineffectual and forced medical procedures that may prolong and even dishonor the period of dying" as the twin problems of end-of-life care. The profession is taking steps to require young doctors to train in hospices, to test knowledge of aggressive pain management therapies, to develop a Medicare billing code for hospital-based care, and to develop new standards for assessing and treating pain at the end of life. Annas says lawyers can play a key role in insisting that these well-meaning medical initiatives translate into better care. "Large numbers of physicians seem unconcerned with the pain their patients are needlessly and predictably suffering," to the extent that it constitutes "systematic patient abuse." He says medical licensing boards "must make it clear...that painful deaths are presumptively ones that are incompetently managed and should result in license suspension."

A: I went on a date with Sammy last weekend. B: Really?______? A: I couldn"t ask for a better night.

Those who ______women"s liberation movement continue to hope, and work, for a change.