Questions 56-60 are based on the following passage.-|||-Medical experts say most Americans do not get enough sleep.They say more Americans need to take a-|||-nap-that is to rest for a short period in the middle of the day.They give people advice to sleep lightly-|||-before continuing with other activities.The experts say naps might improve health by reducing pressure.-|||-Some European and Latin American companies have supported the idea of napping for many years.-|||-They ask people to leave work,go home and have a nap before returning.In the United States,some-|||-companies let workers rest simply in their offices.They believe this can help workers make fewer mistakes-|||-and also increase the amount of work that a person can do.-|||-Sleep experts say it is likely that people make more mistakes at work than at other time.They suggest-|||-that people should not carry out important tasks when they feel sleepy.And they believe the best thing to-|||-do is to take a nap.About 20 minutes of rest is all you need.Experts say this provides extra energy and can-|||-increase your efficiency until the end of the day.But they point out that a nap should last no more than 20-|||-to 30 minutes.A longer nap will put the body into deep sleep and waking up will be difficult.-|||-56.In the first paragraph,take a nap means __ .-|||-A.resting for a short time in the middle of the night-|||-B.working for a long period in the middle of the day-|||-C.sleeping for a short time in the middle of the day-|||-D.walking for a long period in the middle of the night-|||-57.The best way to increase workers`efficiency is __ .-|||-A.having a rest for twenty to thirty minutes-|||-B.doing relaxing exercises-|||-C.talking with friends-|||-D.singing and dancing-|||-58.We can infer from the passage that sleep experts __ .-|||-A.approve of taking a longer nap B.approve of taking a deep sleep-|||-C.disapprove of taking a short sleep D.disapprove of taking a longer nap-|||-59.What will happen to workers if they keep on working without any rest?-|||-A.They will get a lot of money.-|||-B.They will fail in their jobs and even cause a lot of trouble.-|||-C.They will live a happy life in the future.-|||-D.They will feel better after finishing everyday jobs.-|||-60.What is the passage mainly about?-|||-A.The advantages of taking a nap during the day.-|||-B.The advantages of deep sleep during weekends.-|||-C.The disadvantages of deep sleep during weekends.-|||-D.The disadvantages of taking a nap during the day.-|||-Ⅲ.Reading Comprehension(4 points)-|||-Section A (30 points,2 for each)-|||-Directions: There are 3 passages in this part.Each passage is followed by some questions or unfinished-|||-statements.For each of them there are 4 choices marked A,B,Cand D.You should decide on the best ONE-|||-and mark the corres ponding letter on the ANSWER SHEET.