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Scientists around the world are racing to learn how to rapidly diagnose，treat and stop the spread of a new，deadly disease．SARS—Severe Acute Respiratory Syndrome—was (1) for the first time in February 2003 in Hanoi， (2) since then has infected more than 1，600 people in 15 countries，killing 63．At this (3) ，there are more questions than answers surrounding the disease． Symptoms start (4) a fever over 100．4 degrees F，chills，headache or body (5) ．Within a week，the patient has a dry cough，which might (6) to shortness of breath．In 10% to 20% of cases，patients require (7) ventilation to breathe．About 3.5% die from the disease．Symptoms (8) begin in two to seven days，but some reports suggest it (9) take as long as 10 days．Scientists are close to (10) a lab test to diagnose SARS．In the meantime，it is diagnosed by its symptoms．There is no evidence (11) antibiotics or antiviral medicines help， (12) 至doctors can offer only supportive care．Patients with SARS arekept in isolation to reduce the risk of (13) ．Scientists aren’t sure yet，but some researchers think it’s a (14) discovered coronavirus，the family of viruses that cause some common colds． Most cases appear to have been passed (15) droplets expelled when infected patients cough or sneeze．Family members of infected people and medical workers who care (16) them have been most likely to (17) the illness．But recent developments in Hong Kong suggest that the (18) might spread through air，or that the virus might (19) for two to three hours on doorknobs or other (20) ．Health experts say it is unlikely，though，that sharing an elevator briefly with an infected person would be enough to pass the virus．
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There are many superstitions in Britain，but one of the most (1) held is that it is unlucky to walk under a ladder—even if it means． (2) the pavement into a busy street! (3) you must pass under a ladder you can (4) bad luck by crossing your fingers and (5) them crossed until you have seen a dog． (6) ，you may lick your finger and (7) a cross on the toe of your shoe，and not look again at the shoe until the (8) has dried． Another common (9) is that it is unlucky to open an umbrella in the house—it will either bring (10) to the person who opened it or to the whole (11) ．Anyone opening an umbrella in fme weather is (12) ，as it inevitably brings rain! The number 13 is said to be unlucky for some，and when the 13th day of the month (13) on a Friday，anyone wishing to avoid a bad event had better stay (14) ．The worst misfortune that can happen to a person is caused by breaking a mirror， (15) it brings seven years of bad luck! The superstition is supposed to (16) in ancient times，when mirrors were considered to be tools of the gods． Black cats are generally considered lucky in Britain，even though they are (17) witchcraft．It is (18) lucky if a black cat crosses your path—although in America the exact opposite belief prevails． Finally，a commonly held superstition is that of touching wood (19) luck．This measure is most often taken if you think you have said something that is tempting fate，such as“my car has never (20) ，touch wood”
案例分析题阅读《故都的秋》中的这段文字，然后回答下列问题。北方的果树，到秋来，也是一种奇景。第一是枣子树：屋角，墙头，茅房上边，灶房门口，它都会一株株地长大起来。像橄榄又像鸽蛋似的这枣子颗儿，在小椭圆形的细叶中间，显出淡绿微黄颜色的时候，正是秋的全盛时期；等枣树落叶，枣子红完，西北风就要起来了，北方便是沙尘灰土的世界，只有这枣子、柿子、葡萄，成熟到八九分的七八月之交，是北国清秋的佳日，是一年之中最好也没有的黄金季节。 枣子树顽强的生命力是怎么表现的？
How men first learned to invent words is unknown; (1) , the origin of language is a mystery. All we really know is that men, unlike animals, somehow invented certain (2) to express thoughts and feelings, actions and things, (3) they could communicate with each other; and that later they agreed (4) certain signs, called letters, which could be (5) to represent those sounds, and which could be (6) .Those sounds, whether spoken, (7) written in letters, we call words. The power of words, then, lies in their (8) —the things they bring up before our minds. Words become (9) with meaning for us by experience; (10) the longer we live, the more certain words (11) to us the happy and sad events of our past: and the more we (12) , the more the number of words that mean something to us (13) . Great writers are those who not only have great thoughts but also express these thoughts in words which appeal (14) to our minds and emotions. This (15) and telling use of words is what we call (16) style. Above all, the real poet is a master of (17) . He can convey his meaning in words which sing like music, and which (18) their position and association can (19) men to tears. We should, therefore, learn to choose our words carefully and use them accurately, or they will (20) our speech or writing silly and vulgar.
There are many superstitions in Britain，but one of the most (1) held is that it is unlucky to walk under a ladder—even if it means． (2) the pavement into a busy street! (3) you must pass under a ladder you can (4) bad luck by crossing your fingers and (5) them crossed until you have seen a dog． (6) ，you may lick your finger and (7) a cross on the toe of your shoe，and not look again at the shoe until the (8) has dried． Another common (9) is that it is unlucky to open an umbrella in the house—it will either bring (10) to the person who opened it or to the whole (11) ．Anyone opening an umbrella in fme weather is (12) ，as it inevitably brings rain! The number 13 is said to be unlucky for some，and when the 13th day of the month (13) on a Friday，anyone wishing to avoid a bad event had better stay (14) ．The worst misfortune that can happen to a person is caused by breaking a mirror， (15) it brings seven years of bad luck! The superstition is supposed to (16) in ancient times，when mirrors were considered to be tools of the gods． Black cats are generally considered lucky in Britain，even though they are (17) witchcraft．It is (18) lucky if a black cat crosses your path—although in America the exact opposite belief prevails． Finally，a commonly held superstition is that of touching wood (19) luck．This measure is most often taken if you think you have said something that is tempting fate，such as“my car has never (20) ，touch wood”
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