Bad teeth can be painful — and worse. They can even be deadly. Infections (感染）of the gums (牙龈）and the teeth can cause bacteria (细菌）to go into the blood system. Those bacteria can increase the chance of a heart attack and worsen the effects of other diseases. And adults are not the only ones at risk. For example, in 2007, doctors in the Washington area said a boy died when a tooth infection spread to his brain. They said it might have been prevented had he received the dental care (牙齿 保健）he needed. He was twelve years old.

Experts at the National Institutes of Health say good dental care starts at birth. Breast milk, they say, is the best food for the healthy development of teeth. Breast milk can help slow the growth of bacteria and acid production in the mouth.

But dentists say a baby's gums and early teeth should be cleaned after each feeding. Use a cloth with a little warm water. Do the same if a baby is fed with a bottle. Experts say if you decide to put your baby to sleep with a bottle, only give the child water.

When baby teeth begin to appear, you can clean them with a wet toothbrush. Dentists say it is important to find soft toothbrushes made especially for babies and to use them very gently.

The use of fluoride (氟化物）to protect teeth is common in many parts of the world. For example, it is often added to drinking water supplies. The fluoride mixes with enamel (法琅质)， the hard surface on teeth, to help prevent holes from forming.

31.According to the passage, bad teeth can be ____________.

A.painful  B. deadly  C.preventive  D.incurable

32.The writer uses the boy's death as an example to show that   _______?

A. not only adults but the young may suffer from teeth problem

B. babies with bad teeth can easily die

C. the doctors should be responsible for the case

D. the boy was not fed with his breast milk

33. What's the main idea of paragraph 4 and 5?

A. How to develop babies' teeth.           B. Why to protect babies' teeth

C. How to keep babies' teeth clean         D. Why to keep babies' teeth clean

34. The passage tells us that _______.

A. Enamel is most widely used to protect teeth in the world

B. Bad teeth may affect the health of adults and the young

C. Breast milk can cure babies' bad teeth

D. Babies' teeth should be brushed once per day

35.Which of the following can be used as the title of the passage?

A. Concerns for Healthy Teeth of the Young  B. Importance of Healthy Teeth of All

C. Causes of Teeth Problem               D. Solutions to Teeth Problem

We have two daughters: Kristen is seven years old and Kelly is four. Last Sunday evening, we invited some people home for dinner. I dressed them nicely for the party, and told them that their job was to join Mommy in answering the door when the bell rang. Mommy would introduce them to the guests, and then they would take the guests’ coats upstairs and put them on the bed in the second bedroom.

         The guests arrived. I introduced my two daughters to each of them. The adults were nice and kind and said how lucky we were to have such good kids.

         Each of the guests made a particular fuss over (对…关爱倍至)Kelly, the younger one, admiring her dress, her hair and her smiles. They said she was an unusual girl to be carrying coats upstairs at her age.

         I thought to myself that we adults usually make a big “to do” over the younger one because she’s the one who seems more easily hurt. We do it with the best of intentions (意图).

         But we seldom think of how it might affect (影响) the other child. I was a little worried that Kristen would feel she was ignored. I was about to serve dinner when I realized that she had been missing for twenty minutes. I ran upstairs and found her in the bedroom, crying.

         I said, “What are you doing, my dear?”

         She turned to me with a sad expression and said, “Mommy, why don’t people like me the way they like my sister? Is it because I’m not pretty? Is that why they don’t say nice things about me as much?”

         I tried to explain to her, kissing her to make her feel better.

         Now, whenever I visit a friend’s home, I make it a point to speak to the elder child first.

1．The underlined expression “make a big ‘to do’ over” (in paragraph 4) means _______.

         A．show much concern about         B．have a special effect on

         C．list jobs to be done for           D．do good things for

2．The guests praised Kelly for carrying coats upstairs for her _______.

           A．pretty clothes                  B．lovely smile  C.  young age      D．beautiful hair

3．Kristen felt sad and cried because ______.

         A．the guests gave her more coats to carry

         B．the guests praised her sister more than her

C．her mother didn’t introduce her to the guests

         D．she didn’t look as pretty as Kelly

4．We can conclude from the passage that _______.

         A．parents should pay more attention to the elder children

         B．the younger children are usually more easily hurt

         C．people usually like the younger children more

         D．adults should treat children equally

阅读下面的短文, 请根据短文后的要求答题（请注意问题后的字数要求）

Let me tell you about five of the enemies we face from within．The first enemy that you’ve got to destroy before it destroys you is indifference．What a tragic disease this is! “Ho-hum，let it slide. I’ll just drift along．” Here’s one problem with drifting：you can’t drift your way to the top of the mountain．

The second enemy we face is indecision(优柔寡断). Indecision is the thief of opportunity and enterprise．It will steal your chances for a better future．Take a sword to this enemy．

The third enemy inside is doubt．Sure，there’s room for healthy skepticism．You can’t believe everything．But you also can’t let doubt take over．Many people doubt the past, doubt the future，doubt each other，doubt the government，doubt the possibilities and doubt the opportunities．               , they doubt themselves．I’m telling you，doubt will destroy your life and your chances of success．It will empty both your bank account and your heart．Doubt is all enemy．Get rid of it．

The fourth enemy within is worry．We’ve all got to worry some．Just don’t let it conquer you．Instead, let it alarm you．Worry can be useful．If you step off the curb (路边) in New York City and a taxi is coming，you’ve got to worry．But you can’t let worry loose like a mad dog that drives you into a small coffer．Here’s what you’ve got to do with your worries：drive them into a small corner. Whatever is out to get you，you’ve got to get it．Whatever is pushing on you, you’ve got to push back．   

The fifth enemy is overcaution. It is the timid (胆小的) approach to life．Timidity is not a virtue；it’s all illness．If you let it go，it’ll conquer you．Timid people don’t get promoted．They don’t advance and grow and become powerful in the marketplace．You’ve got to avoid overcaution．       

1.What’s the best title for this passage? (Within 8 words)   

2.List three enemies inside that might prevent you from getting promoted．(Within 5 words)

3.Fill in the blank in Paragraph 3 with proper words or phrases．(Within 5 words)

4.Which sentence in the text is the closest in meaning to the following one?

However，you shouldn’t be forced into a small room by the worry beyond control．

5.Translate the underlined sentence in Paragraph 4 into Chinese．

We each have a unique genetic (基因的，遗传的) make-up. Every cell of your body has the same set of about 100,000 separate genes made of DNA. These are the instructions for producing a person. Genes decide everything from the colour of your skin to the way your brain works. You have one of several billion combinations of DNA which come from the random mixing of your parents’ genes. Except for identical twins (同卵双胞胎), no one has the same combination as another person. You are unique! You are unique in another way too: in the way you are raised and all the experiences you have from before birth to adult life. These experiences influence you, your behaviour and attitudes, and the choices you make.

But are genes or life experiences more important in shaping your appearance and personality? Scientists are studying twins to find out. One set of twins occurs every 70 births---some are identical and others are non-identical twins. Identical twins are special because they share exactly the same genes and often the same environment. Non-identical twins are more like ordinary brothers and sisters.

Some identical twins have been adopted and brought up in different homes. With identical genes but a different home environment, scientists can study twins to see how much a particular feature depends on the genes we inherit. For example, we know that eye problems, like short-sightedness, are mostly genetic. But resistance to pain is largely dependent on experiences. Genes also influence our eating habits. Identical twins brought up apart often like to eat at the same time of day and feel full after eating the same amount. Non-identical twins in similar circumstances have more varied eating habits. Identical twins are also more likely to follow the same patterns for marriage and divorce than non-identical twins.

Scientists are trying to identify the different genes that influence our behaviour. Some people are thrill-seekers and get into risk-taking and adventurous activities. They take up extreme sports like bungee jumping and possibly take drugs. Scientists have discovered a gene which affects this.

We could ask, “Are our lives determined by our genes or our upbringing?” Scientists are learning more all the time, but it is certainly true that both are important in making us who we are.

1.What is the main idea of the first paragraph?

   A. We cannot easily change our physical appearance.

   B. How we turn out depends on our parents’ genes.

   C. Everyone has a physical double somewhere in the world.

   D. Both our genes and our experiences make us who we are.

2.Why are scientists studying twins?

   A. To find out how many twins are born every year.

   B. To discover what shapes us as individuals.

   C. To compare differences between twins.

   D. To study brother-and-sister relationships.

3.According to the passage, __________.

   A. one in 70 twins are genetically identical

   B. non-identical twins are usually not of the same sex

   C. twins separated at birth behave exactly the same

   D. identical twins are genetically the same

4.Which of the following is most affected by experience according the passage?

   A. Eating habits.   B. Eye-sight.   C. Pain resistance.   D. Marriage patterns.

5.What does the underlined “this” in Paragraph 4 refer to?

   A. Our love of sport.             B. Our attitude to risk-taking.

   C. Our skill at bungee jumping.    D. Our ability to take drugs.

Death Valley is the lowest, hottest, driest area in North America. This California National Park has less than 5 cm of rainfall a year and temperature up to 53℃ in summer. That’s enough to keep Americans away during the hottest months from June to August. But it is the high temperature and terrible heat that draw their most crazy fans, the foreign tourists. From all over the world, they come to the valley floor in cars, carrying maps and water bottles, and fanning themselves with newspapers to keep cool.

About 1.3 million visitors enter the park each year, from June through August. 90% of them are foreigners. They go there to experience the summer heat that gives Death Valley its name. The average high in July is 53.2 ℃ and the low 30 ℃. For August, the average high is 52.2 ℃ and the low 29.4 ℃.

So what do Americans think of the foreign visitors who arrive for the heat, just when locals from the United States try to avoid it? Park manager Brenda Henson says, “ The foreigners want to experience the heat in Death Valley. We think it’s crazy.”

In fact, Death Valley is a series of salt flats (盐滩) 225 km long and 6 km to 26 km wide. Birds and animals are largely absent, and only the hardiest plants have some chance of existence in this extreme place.

One tourist from Paris concluded, “ We come to it because we can tell all our friends and family that we’ve been to the hottest place in the world.”

1.The real attraction of Death Valley for foreigners is that _____.

2.What does the underlined word “ hardiest” in Paragraph 4 mean?

3.Which of the following is NOT true according to the passage?

4.What would be the best title for the passage?