8．March 21has been declared World Sleep Day.a time to recognize and celebrate the value of sleep．Man——青夏教育精英家教网——

8．March 21has been declared World Sleep Day，a time to recognize and celebrate the value of sleep．Many sleep experts hope it will be a wake-up call．
According to a 2014poll（民意调查） by the National Sleep Foundation，nearly 4in 5Americans don't get as much sleep as they should during the workweek．On average，adults are thought to need at least eight hours of sleep a night，although some can manage with less and some won't do well without more．But the survey found that，on workdays，only 21% of Americans actually get a full eight hours of sleep，and another 21% get less than six
To many of us，the thought of spending more time sleeping is，well，a big yawn．On the other  hand，the thought of being smarter，thinner，healthier and more cheerful has a certain appeal．And those are just a few of the advantages that can be ours if we consistently get enough sleep，researchers say．Also on the plus side：We're likely to have better skin，better memories better judgment，and，oh，yes，longer lives
"When you lose even one hour of sleep for any reason，it influences your performance the next day，"said Dr Alon Avidan，director of the UCLA Sleep Disorders Center．
A study published last year found the same to be true even of children．When kids aged 8t0 12slept for just one hour less for four nights，they didn't function as well during the day．
But sleeping has an image problem"We see napping or steeping as lazy，"said Jennfer Vriend，a clinical psychologist in Ottawa，Canada，and the leading author of the study with children"We put so much emphasis on diet，nutrition and exercise．Sleep is in the back seat．""In fact，"she added，"no matter how much we work out，no matter how well we eat，we can't be in top physical shape unless we
also get plenty of sleep"
24．The underlined part in Paragraph I meansC．
A．to wake up the sleepers
B．to serve as a morning call
C．to draw people's attention
D．to declare the special day
25．From Paragraph 3we can infer thatC．
A．Being healthier is one of the advantages for us
B．sleeping has nothing to do with one's expectations
C．enough sleep is the guarantee（保证） of the appealing things
D．spending more time on sleeping is a waste of time
26．What Jennifer Vriend said in the last paragraph implies thatA．
A．people care little about sleeping
B sleeping is an image problem
C．lazy people tend to sleep long
D．sleeping is only part of our life
27．What is the purpose of the passage？D
A．To talk about people's sleeping problems
B．To provide an investigation result of sleeping
C．To stress the function of sleeping at night
D．To arouse（引起） the awareness of enough sleeping．

7．You must be excited about going to the USA for schooling．?
_________，but I'm afraid I can't do well because my English is poor．（　　）

	A．	Never mind		B．	Well，I ought to
	C．	I don't know yet		D．	Certainly not

6．The new machine，if _________ properly，will work at least ten years．（　　）

5．This is such an interesting work of art______ all of us like it．（　　）

4．________ is reported in the newspaper，the number of the dead people in the Yushu earthquake is 2203．（　　）

3．________ this medicine，it will cure you of your illness．（　　）

2．Mark was a student at this university from 1999to 2003，____ he studied very hard and was made Chairman of the Students'Union．（　　）

	A．	during which time		B．	for which time
	C．	during whose time		D．	by that time

1．_______ he said so made us very surprised，because he was always an honest boy．（　　）

20．--It shouldn't take long to clear up after the party if we all volunteer to help．
--That's true．_____．（　　）

	A．	Don't abandon yourself to pleasure
	B．	Many hands make light work
	C．	A word is enough to the wise
	D．	Doing is better than saying

19．Sometimes the shark attacks you because it looks upon you as a fish by mistake．
→Sometimes the shark attacks you because itmistakesyoufora fish．

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