I did love my mom very much but it got to a point _________even she did not want me to see her as she was.
A. where B. when C. that D. which
Nowadays in China many teenagers have no dream _________to be an astronaut and fly to the moon.
A. rather than B. more than C. other than D. less than
That car accident _________all his life. After that he was limited to a wheelchair.
A. damaged B. destroyed C. harmed D. ruined
Barack Obama, who came into _________ power on January 20, 2009, was awarded _________2009 Nobel Peace Prize.
A. the; the B. the; / C. /; the D. /; /
Losing a baby tooth can be fun for a kid. You can put it under your pillow and look forward to finding some money there in the morning. And then you can watch your new permanent(永恒的) tooth grow in its place.
But if a permanent tooth falls out, that’s a problem. There isn’t another one under the gum(齿龈)that can replace it. Unfortunately, this happens to some older people. And if permanent teeth fall out-or need to be pulled-an older person might need dentures.
Dentures, known as false teeth, are a set of replacement teeth for any teeth that are missing. There are partial dentures, which take the place of only a few teeth and prevent the others from changing position. If all the teeth are gone, the person would need complete dentures, which replace every tooth in the mouth.
Dentures can cause pains at first and take some time to get adjusted to. They also need special care. They should be brushed daily with a special denture brush and cleanser and soaked in denture solution when not in the mouth.
Dentures are important for older folks because, without teeth, it’s hard to smile, talk, and eat properly. But it can be a little weird if you see someone take out his or her dentures. It can also be strange to see someone, like a grandparent, without dentures in because he or she won’t have any teeth. Try not to make fun of the person because this could cause hurt feelings.
People usually lose their permanent teeth due to periodontal disease, or gum disease, which is caused by bacteria that attacks the gums. Diseased gums aren’t strong and healthy, so teeth can get loose and fall out. Older people often have many cavities(洞)that have been filled over the years, and these fillings can weaken over time, leading to more tooth decay(腐烂).
1.If one of your baby teeth falls out, he or she .
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A．should have a false tooth fixed in its place |
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B．have to put it under your pillow at once |
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C．will gain a permanent tooth in future |
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D．can exchange it for some money |
2.A person wearing dentures .
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A．should brush them with a special denture brush every few days |
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B．will take a very long time to adjust himself or herself to them |
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C．will experience unpleasant feelings at the beginning of fixing them |
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D．should use denture solution to soak them in his or her mouth |
3.Which of the following is NOT true according to the passage?
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A．Partial dentures can prevent the remaining teeth from changing position. |
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B．Old people will find it hard to smile, talk, and eat properly without teeth. |
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C．A person’s teeth will possibly get loose if diseases strike his gums. |
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D．It is hard for a person to wear dentures if all his teeth have fallen out. |
4.What does the underlined word “weird” mean in the fifth paragraph?
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A．inconvenient |
B．strange |
C．uncomfortable |
D．impolite |
American society is not nap (午睡)friendly . In fact , says David Dings , sleep specialist at the University of Pennsylvania School of Medicine , “There’s even a prohibition (禁止) against admitting we need sleep”. Nobody wants to be caught napping or found asleep at work . To quote a proverb : “Some sleep five hours , nature requires seven , laziness nine and wickedness(淘气的) eleven.”
The way not to fall asleep at work is to take naps when you need them . “We have to totally change our attitude toward napping ,” says Dr. William Dement of Stanford University , the godfather of sleep research .
Last year a national commission led by Dement identified(发现) an “American sleep debt” which one member said was as important as the national debt . The commission was concerned about the dangers of sleepiness : people causing industrial accidents or falling asleep while driving . This may be why we have a new sleep policy in the White House . According to recent reports , President Clinton is trying to take a half---hour snooze (瞌睡) every afternoon .
About 60 percent of American adults nap when given the opportunity . We seem to have “a mid afternoon quiet phase ,” also called “a secondary sleep gate .” Sleeping 15 minutes to two hours in the early afternoon can reduce stress and make us refreshed . Clearly , we were born to nap .
We superstars of snooze don’t nap to replace lost shut--eye or to prepare for a night shift . Rather , we “snack” on sleep ,whenever , wherever and at whatever time we feel like it . I myself have napped in buses , cars , planes and on boats ; on floors and beds ;and in libraries , offices and museums .
1.The research done by the Dement Commission shows that Americans .
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A．don’t like to take naps |
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B．are terribly worried about their national debt |
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C．think that lack of enough sleep causes many accidents |
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D．have caused many industrial and traffic accidents |
2.The purpose of this article is to .
B. explain the danger of sleepiness
C. discuss the side effects of napping
D. convince the reader of the necessity of napping
3.The “American sleep debt”(Line 1 , Para .3) is the result of .
4.The second sentence of the last paragraph tells us that it is .
