Self Check

　　Ⅰ.词汇运用。

　　A)根据句意及首字母提示填写单词。

　　1．I realized I had left my schoolbag at school when I got home.

　　2．My two brothers are postmen．They send letters and newspapers in our neighborhood.

　　3．It's difficult to avoid buying products made in China in American stores.

　　4．Jack is the liveliest boy in our class. He is always full of energy.

　　5．I can't play soccer with you now because I have to complete my homework first.

　　B)用方框中所给短语的适当形式填空。

　　be used for，be brought to，be caused by，

　　be famous for，be covered with

　　6．The whole table was__covered__with delicious food when I got home on my birthday.

　　7．This kind of machine is__used__for picking up rubbish.

　　8．The car accident was__caused__by the man's careless driving.

　　9．Anxiis__famous__for producing good tea.

　　10．These newspapers were__brought__to us by an old man this morning.

　　Ⅱ.完形填空。

　　Medical experts say most Americans do not get enough sleep.They say more Americans need to __11__ for a short period in the middle of the day.They are advising people to sleep lightly __12__continuing with other activities.

　　One study earlier this year found that persons who sleep for a few minutes during the day were less likely to die of __13__diseases.The study followed more than 2，300 Greek adults__14__ about six years. Adults who rested for half an hour at least three times a week had a 37 percent lower __15__of dying from heart diseases than those who didn't nap.

　　Study organizers said the__16__ evidence was in working men. They said naps might improve health by mitigating(缓和) tension __17__ by work.

　　Some European and Latin American businesses have supported the idea of __18__for many years. They urge people to __19__ work，go home and have a nap before returning. In the United States，some companies let workers rest briefly in their offices.They believe this reduces mistakes and accidents，and __20__ increases the amount of work a person can do.

　　Sleep experts say it is likely that people __21__ more mistakes at work than at other times.They say people should not carry out important duties __22__ feel sleepy.And they say the best thing to do is to take a nap.About twenty minutes of rest is all you __23__．Experts say this provides extra__24__ and can increase your effectiveness until the end of the day.But experts __25__ that a nap should last no more than twenty to thirty minutes.A longer nap will put the body into deep sleep and waking up will be difficult.

　　(D)11.A.work　　　　　　 B．wait

　　C．live D．rest

　　(B)12.A.between B．before

　　C．besides D．during

　　(A)13.A.heart B．brain

　　C．mind D．mouth

　　(C)14.A.on B．at

　　C．for D．with

　　(A)15.A.risk B．end

　　C．order D．part

(D)16.A.power B．argument