Teeth are important．Strong.healthy teeth help you chew foods that help you grow．They help you speak clearly．And.they help you look your best．Here are some tips for you to take care of your teeth．题目和参考答案——青夏教育精英家教网—

题目内容

Teeth are important．Strong，healthy teeth help you chew foods that help you grow．They help you speak clearly．And，they help you look your best．Here are some tips for you to take care of your teeth．

1．Brush your teeth on the right way．

Brush your teeth at 1east twice a day―after breakfast and lunch or after sweet snacks，too．

Brush all of your teeth，not just the front ones，Spend time brushing teeth along the sides and back of your mouth．Brush away from your gums，too．

Spend at least three minutes each time you brush．Play a song you like to help pass the time．Get a new toothbrush every three months．When you buy your toothbrush，be sure it has soft bristles（毛）．

2．Learn how to floss your teeth．

Flossing is a very important way to keep your teeth healthy．Food may hide in places where a toothbrush cannot get to，like the space between two teeth．Flossing can help get rid of it．Carefully move floss between two teeth．Up and down．You’11 need to floss your teeth at least once a day．

3．Have good eating habits．

You need to be careful about what you eat and drink. Eating sugar is a major of tooth decay（腐败）．Eating sugar before you go to bed can make things even worse，eat lots of fruit and vegetables and drink water instead of soda．

60．The passage is mainly about ．

A．how to take care of your teeth

B．how to brush your teeth

C．how to form good eating habits

D．how to floss your teeth

61．The underlined word “tips” in this passage means ．

A．money given to the waiter for personal services

B．piece of advice on how to do something

C．light blow，tape

D．thin end of something

62．When you brush your teeth．at least minute（s）is necessary．

A．1 B．2 C．3 D．4

63．Which is NOT mentioned in this passage？

A．Flossing your teeth． B．Having good eating habits．

C．Brushing your teeth． D．Going to see the dentist．

64．Which of the following statements is NOT true according to this article？

A．We should brush our teeth at least twice a day．

B．Flossing can help to get rid of the food hidden between two teeth．

C．One of the major causes of tooth decay is eating sugar．

D．We don’t have to brush our teeth if we eat a lot of fruit and vegetables．

60．A 61．B 62．C 63．D 64．D

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Perhaps the most famous theory, the study of body movement, was suggested by Professor Ray Birdwhistell. He believes that physical appearance is often culturally programmed. In other words, we learn our looks—we are not born with them. A baby has generally informed face features. A baby, according to Birdwhistell, learns where to set the eyebrows by looking at those around-family and friends. This helps explain why the people of some areas of the United States look so much alike, new Englanders or Southerners have certain common face features that cannot be explained by genetics(遗传学). The exact shape of the mouth is not set at birth, it is learned after. In fact, the final mouth shape is not formed until well after new teeth are set. For many, this can be well into grown-ups. A husband and wife together for a long time often come to look alike. We learn our looks from those around us. This is perhaps why in a single country area where people smile more than those in other areas. In the United States, for example, the South is the part of the country where the people smile most frequently. In New England they smile less, and in the western part of New York State still less. Many southerners find cities such as New York cold and unfriendly, partly because people on Madison Avenue smile less than people on Peachtree Street in Atlanta. Georgia. People in Atlanta, Georgia. People in largely populated areas also smile and greet each other in public less than people in small towns do.

Ray Birdwhistell believes that physical appearance _______.

A. has little to do with culture

B. has much to do with culture

C. is ever changing

D. is different from place to place

According to the passage, the final mouth shape is formed _______.

A. before birth B. as soon as one’s teeth are newly set

C. sometime after new teeth are set D. around 15 years old

Ray Birdwhistell can tell what area of the United States a person is from by _______.

A. how much he or she laughs B. how he or she raises his or her eyebrows

C. what he or she likes best D. the way he or she talks

This passage might have been taken out of a book dealing with ________.

A. physics B. chemistry C. biology D. none of the above

When I was in high school, I had a recurring(反复的) dream of my teeth falling out. I dreamt about my teeth just about every night for at least three weeks. Sometimes they would fall out one at a time, sometimes all at once. I became terrified that my dreams meant I would actually lose my teeth. Nine years later and about a million trips to the dreams, I still have a full set of teeth, but I’ve learned that when we’re experiencing stress in our lives, it tends to show up in our dreams as well．

Miller says losing teeth indicates burdens that crush your pride. If your teeth are knocked out, you’ll have sudden misfortune． Other explanations for dreams about lost teeth are that the dreamer is feeling powerless in life and may be in a transitional（过度的） period from one situation of life to another. Some experts believe that dreams of losing teeth today show we’re just as insecure and uncertain as we were in childhood．

When I dreamt about my teeth back in high school, I was trying to choose a college— a stressful decision． The dreams resurfaced when college graduation rolled around four years later and I’m sure they’ll start again when I graduate．

A little of stress in our everyday lives is normal. But sometimes it becomes such a regular occurrence in our lives that it influences our dreams and causes us to lose valuable sleep. Understanding our dreams is key to identifying and ending stress in our waking hours and restoring peace to our nighttime hours．

56．We know from the text that those who dreamt about lost his teeth indicates that________．

A．They will have sudden misfortune．

B．They are feeling powerless in life

C．They are as insecure and uncertain as they were in childhood

D．They are experiencing stress in their lives

57．How many different kinds of explanations are mentioned in the text about losing teeth?

A．Two B．Three C．Four D．Five

58．The underlined expression “rolled around” means_______

A．came about B．came down C．came near D．rolled out

59．We can infer from the text that___________．

A．Our dream can reflect what we go through in our real life．

B．Dreams can damage our valuable sleep．

C．We only dream when we are under great pressure．

D．Our dreams can show us what will happen in the future．

60．The author wrote the passage to tell us that______.

A．He wanted to show us his strange dreams．

B．He tried to explain why we dream．

C．Different people have different dreams

D．It is important for us to understand the meaning of our dreams

Two scientists in California now think they can find out a person’s real age.Jeffery Bada and Patricia Masters do chemical tests on teeth.When we are born the amino acids（氨基酸）in our teeth are in one form.Then，as we grow older these amino acids change into a second form.Every year，one thousandth of the amino acids changed.So，by testing just one tooth and counting the number of amino acids in each form，Bada and Masters can work out a person’s age.They tested a tooth from the body of an Eskimo（爱斯基摩人）woman who died 1 600 years ago.From the appearance of her body，she was between 50 and 60 years old when she died.The tooth test put her age at 53.Then the Russian Government sent them a tooth from an old man in Georgia.The tooth said she was 99.Her real age was 96.The Russians are now hoping to send more teeth，from the very old people without birth certificates（出生证明书）.But there are problems.Some of the centenarians（百岁老人）have lost all their teeth.The others want to keep their teeth until they drop out naturally.So the Russian Government and the American scientists have to wait and hope.

61.Jeffery Bada and Patricia Masters believe that they can tell a person’s age according to_______.

A.an experiment on his bone

B.the shape and condition of his teeth

C.a test on the amino acids within his body

D.the changing form of amino acids in his teeth

62.According to the passage，which of the following statements is true?

A.The amino acids in an adult’s teeth may differ from those in a baby’s.

B.The number of amino acids in a 20-year-old man is different from that when he was seven.

C.Amino acids in one teeth changes without affecting their forms.

D.Scientists now can tell how long a person will live by testing his teeth.

63.Why are the two scientists asked to find out some very old Russians’ age?

A.Because the Government wants to know how long these old people can live.

B.Because they have no birth certificates.

C.Because people who have tooth problems tend to live longer.

D.Because the Government wants to know their dates of birth and death.

64.In order to find out the exact age of some people over 100，both the Russian Government and American scientists_______.

A.should wait until all of them die

B.should pull out one of their teeth

C.have to wait for their teeth to drop out naturally

D.want to have their teeth pulled out

65.The central idea of the passage is_______.

A.the relationship between people’s teeth and ages

B.the relationship between amino acids and teeth

C.the contradiction（矛盾）between scientists and patients

D.the contradiction between the Government and the scientists

第三部分阅读（共两节，满分40分）
第一节阅读理解（共15小题；每小题2分，满分30分）
阅读下列短文，从每题所给的A、B、C和D项中，选出最佳答案。
We’ve talked about snails (蜗牛) and their slow move. But much of the time snails don’t move at all. They are in their shells (壳) —sleeping.
Hot sun will dry out a snail’s body. So at the least sign of hot sun, a snail draws its body into his shell. A snail will die in a heavy rain. So when it rains, a snail does the same thing, too. A snail can sleep for as long as it needs to. It spends all the winter months in its shell, asleep.
In the spring the snail wakes up. Its body, about three inches long, comes out from the shell. When hungry, the snail looks for food. Its eyes, at the end of the top feelers (触角), are very weak. But its sense (感觉) of smell is very strong. It helps the snail to find food and the new greens.
A snail’s mouth is no bigger than the point of a pin (大头针). Yet it has 256,000 teeth! The teeth are very small, and you can’t see them. If you put a snail in a hard paper box, it will eat its way out! And if a snail wears out its teeth, it will grow new ones.
51. A snail _________.
A. moves more slowly at night        B. has thousands of feet
C. doesn’t move at all                     D. sleeps much of the time
52. In the sentence “A snail draws its body into its shell”, the word “draw” means _____.
A. to make with a pencil        B. to push      C. to pul     D. to move away
53. From the story, we know _________.
A. a snail’s shell is very thin           B. a snail can’t see well
C. a snail’s nose is quite short        D. a snail’s body changes                                    in different seasons
54. A snail goes to sleep when _____.
A. it feels hungry   B. it is put into a paper box C. spring is coming   D. it rains heavily
55. Which of the following is wrong?
A. In winter the snail doesn’t eat or move.
B. A snail doesn’t like living under the sun.
C. The snail’s teeth can’t be worn out.
D. The snail’s nose helps to find food.

Directions: Read the following passage. Complete the diagram by using the information from the passage.

Write NO MORE THAN THREE WORDS for each answer.

Dolphins are not fish; they’re mammals. They are warm-blooded like man and give birth to one baby called a calf at a time. At birth a calf is about 90—130cm long and grows to about 4m. They live up to 40 years. They are highly sociable animals.

Their teeth are interlocking rows of hooks, suitable for holding slippery fish. They eat fish whole starting with head first. When they go wild they keep their mouth open and sometimes keep it nodding to express their aggression. Greater aggression is shown by violent jaw clapping. Dolphins breathe through their blowhole(呼吸孔) located at the top of their head. The dolphin’s eyes produce a special slippery secretion(分泌物) which protects the eyes from foreign objects and water friction.

Dolphins use their powerful tail to move through the water. They also use their tail while hunting. They slap their tail rapidly when they get annoyed or when they want to indicate the sign of danger to alert other dolphins.

The dolphin’s skin is completely smooth allowing the dolphin to move easily through the water, and also reduce heat loss. Their skin may bear rake marks from other dolphin’s teeth during play or mating, and can easily become badly sunburned if they strand(搁浅).

Their bodies are very streamlined so they may swim at high speed through the water, and an example of this is their ears. Dolphin’s ears are barely noticeable marked only by a small hole just behind the eyes.

While sleeping, it shuts down only half of its brain, as its breathing is under voluntary control. Dolphins take short catnaps, floating just below the surface, and then slowly rising to breathe. Often dolphins are very active during night time, for some this is their main feeding time. Dolphins are able to dive to great depths, and also leap to great heights. They may leap to avoid predators or to show how powerful they are to females at mating time.

Title: 71.___________

Ⅰ. Characteristics

● mammals : warm-blooded animals and one baby at a birth

● length : 90cm-4m

● lifespan : 40 years

● highly sociable animals

Ⅱ. 72.___________

● teeth→ holding slippery fish and eating fish whole 73.__________

● opening and nodding mouth→ expressing their aggression

● 74._________ jaw→ expressing greater aggression

● blowhole at the top of their head→ 75.____________

● eyes with a special slippery secretion→ protecting the eyes from foreign objects and water friction

● 76._____________ ears→ swimming at high speed through the water

Ⅲ. Tail

● powerful to move through the water

● 77.___________ and expressing annoyance and danger

Ⅳ. 78.___________

● completely smooth to move easily through the water and reduce heat loss

● full of rake marks to become badly sunburned easily

Ⅴ. Body

● 79._____________ to swim at high speed through the water

Ⅵ. Habitual nature

● short catnaps with only half of its brain

● 80.___________ breathing

● activities during night time for feeding

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