15春华师《综合英语3》在线作业答案.docx

1、15春华师综合英语3在线作业答案华师综合英语（3）在线作业一、阅读理解（共 10 道试题，共 100 分。）1. Do you have trouble sleeping at night? Then maybe this is for you.When you worry about needing sleep and twist around trying to find a comfortable position, youre probably only making it more difficult to relax.You may also have some bad habit

2、s that contribute to the problem. Do you rest frequently during the day? Do you think about sleeping a lot, or sleeping late on weekends? Any or all of these factors might be leading to your insomnia by disrupting your bodys natural rhythms.What should you do then on those sleepless nights? Dont bot

3、her with sleeping pills; they can actually cause worse insomnia later. The best thing to do is to drink milk or eat cheese or tuna fish. They are all rich in an amino acid that helps produce in the brain a neurotransmitter that induces sleep. This neurotransmitter will help you relax, and youll be o

4、n the way to getting a good nights sleep. 1). What is the purpose of the article?A. to make recommendation on sensible dieting.B. to report the latest advances in brain surgery.C. to relate an experiment combining sleep and exercise.D. to advise on ways of dealing with sleep difficulties.正确答案：D2). A

5、ccording to the writer, what happens when you turn and twist to get comfortable?A. Your heart rate is lowered.B. It becomes harder to relax.C. You become too tired to sleep.D. Sleep rhythms are disrupted.正确答案：B3). According to the author, what sometimes causes people to have trouble sleeping?A. Fail

6、ure to rest during the day.B. Lack of sleep on weekends.C. Vigorous exercise in the evening.D. Eating cheese before going to bed.正确答案：C4). What does the writer say about sleeping pills?A. They might eventually cause you to lose sleep.B. They help produce a neurotransmitter in the brain.C. You must n

7、ot drink milk if you take them.D. They make it unnecessary to take naps.正确答案：A5). Which of the following is not a bad habit that contributes to insomnia?A. Sleeping a lot on weekends.B. Lack of exercise.C. Drinking milk.D. Taking sleeping pills.正确答案：C2. Franklin D. Roosevelt, the 32nd president of t

8、he United States, was from a wealthy, well-known family. As a child, he attended private school, had private tutors, and traveled with his parents to Europe. He attended Harvard University, and afterward studied law. At age 39 Roosevelt suddenly developed polio, a disease that left him without the f

9、ull use of his legs for the rest of his life. Even through the worst of his illness, however, he continued his life in politics. In 1924 he appeared at the Democratic National Convention to nominate Al Smith for president, and eight years after that he himself was nominated for the same office. Roos

10、evelt was elected to the presidency during the Great Depression of the 1930s, at a time when more than 5,000 banks had failed and thousands of people were out of work. Roosevelt took action. First he declared a bank holiday that closed all the banks so no more could fail; then he reopened the banks

11、little by little with government support. Roosevelt believed in using the full power of government to help what he called the “ forgotten people”. And it was these workers, the wage earners, who felt the strongest affection toward Roosevelt. There were others, however, who felt that Roosevelts polic

12、ies were destroying the American system of government, and they opposed him in the same intense way that others admired him.In 1940 the Democrats nominated Roosevelt for an unprecedented third term. No president in American history had ever served three terms, but Roosevelt felt an obligation not to

13、 quit while the United States entry into World War II was looming in the future. He accepted the nomination and went on to an easy victory.1). What does the passage mainly discuss?A. political aspects of Roosevelts lifeB. problems during the Great DepressionC. Roosevelts upbringingD. criticisms of R

14、oosevelts actions正确答案：A2). As used in line 10, the phrase “little by little” means that RooseveltA. opened the smaller banks firstB. opened the banks for minimal servicesC. opened the banks a few at a timeD. opened the bank for a short time正确答案：C3). Which of the following statements in NOT mentioned

15、 in the passage?A. Roosevelt was elected during the Great DepressionB. Roosevelt voted for Al SmithC. Roosevelt had difficulty walking during his presidencyD. Roosevelt supported strong government正确答案：B4). The word “affection” as used in line 12 could best be replaced by which of the following?A. fa

16、scinationB. fondnessC. lureD. appeal正确答案：B5). The word “unprecedented” in line 15 could best be replaced byA. unimportantB. unheard ofC. unjustified D. unhampered正确答案：B3. Martin Luther King, Jr., is well known for his work in civil rights and for his many famous speeches. Among them his moving “I ha

17、ve a dream” speech. But fewer people know much about Kings childhood. M. L., as he was called, was born in 1929 in Atlanta, Georgia, at the home of his maternal grandfather. M. L.s grandfather, the Reverend A.D. Williams, purchased their home on Auburn Avenue in 1909. twenty years before M.L. was bo

18、rn. The Reverend Williams, an eloquent speaker, played an important role in the community since so many peoples lives centered around the church. He allowed his church and his home to be used as a meeting place for a number of organizations dedicated to the education and social advancement of blacks

19、. M.L. grew up in this atmosphere, with his home being used as a community gathering place, and was no doubt influenced by it.M.L.s childhood was not especially eventful. His father was a minister and his mother was a musician. He was the second of three children, and he attended all-black schools i

20、n a black neighborhood. The neighborhood was not poor, however. Auburn Avenue was the main artery through a prosperous neighborhood that had come to symbolize achievement for Atlantas black people. It was an area of banks, insurance companies, builders, jewelers, tailors, doctors, lawyers, and other

21、 black-owned of black-operated businesses and services. Even in the face of Atlantas segregation, the distinct thrived. Dr. King never forgot the community spirit he had known as a child, nor did he forget the racial prejudice that was a seemingly insurmountable barrier that kept black Atlantans fro

22、m mingling with whites.1). What is this passage mainly about?A. the prejudice that existed in AtlantaB. Martin Luther Kings childhoodC. M.L.s grandfatherD. the neighborhood King grew up 正确答案：B2). According to the author, King was influenced byA. community spiritB. black lawyersC. his motherD. his sp

23、eeches正确答案：A3). As used in line10, the word “eventful” is closest in meaning to which of the following?A. valuedB. memorableC. admirableD. emotional正确答案：B4). According to the author, M.L. A. had a difficult childhoodB. was a good musician as a childC. loved to listen to his grandfather speakD. grew

24、up in a relatively rich area of Atlanta正确答案：D5). According to the author, blacks in Kings neighborhood were involved in all the following business and services EXCEPTA. dentistryB. medicineC. lawD. banking正确答案：B4. Carbohydrates, which are sugars, are an essential part of a healthy diet. They provide

25、d the main source of energy for the body, and they also function to flavor and sweeten foods. Carbohydrates range from simple sugars like glucose to complex sugars such as amylose and amylopection. Nutritionists estimate that carbohydrates should make up about one-fourth to one-fifth of a persons di

26、et. This translates to about 75-100 grams of carbohydrates per day.A diet that is deficient in carbohydrates can have an adverse effect on a persons health. When the body lacks a sufficient amount of carbohydrates it must then use its protein supplies for energy, a process called gluconeogenesis. Th

27、is, however, results in a lack of necessary protein, and further health difficulties may occur. A lack of carbohydrates can also lead to ketosis, a build-up of ketones in the body that causes fatigue, lethargy and bad breath. 1). Whats the main idea of this passage?A. carbohydrates are needed for go

28、od healthB. carbohydrates prevent a build-up of proteins.C. carbohydrates can lead to ketosisD. carbohydrates are an expendable part of a good diet正确答案：A2). According to the passage, which of the following does NOT describe carbohydrates?A. a protein supplyB. a necessityC. a range of sugarsD. an ene

29、rgy source正确答案：A3). The word “lack” in line9 is most similar to which of the following?A. plethoraB. shortageC. derivationD. commission正确答案：B4). Which of the following best describe the authors tone?A. sensitive B. emotionalC. informativeD. regretful正确答案：C5). Which of the following best describes th

30、e organization of this passage?A. cause and resultB. comparison and contrast C. specific to generalD. definition and example正确答案：B5. Alzheimers disease impairs a persons ability to recall memories, both distant and as recent as a few hours before. Although there is not yet a cure for the illness, th

31、ere may be hope for a cure with a protein called nerve growth factor. The protein is produced by nerve cells in the same region of the brain where Alzheimers occurs. Based on this relationship, scientists from the University of Lund in Sweden and the University of California at San Diego designed an experiment to test whether doses of nerve growth factor could reverse the effects of memory loss caused by Alzheimers. Using a group of rats with impaired memory, the scientists gave half of the rats doses of nerve growth factor while giving the other half a blood