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

About 90 percent of Chinese believe the polarization(分化) between the rich and poor is “serious” in China, according to a survey conducted by China Youth Daily. And more than 80 percent of the respondents(对象) surveyed said something must be done to narrow the expanding gap between the rich and poor, while 14.1 percent said it was necessary.
The polarization has aroused wide concern among the public in recent years. The State Development and Reform Commission(国家发改委) said the Gini Coefficient had reached 0.47 for China, up from o.29 two decades ago. Usually, a country with a number above 0.4 is warned to pay attention to the income inequality problem.
To find out the people’s view, the survey covered 10,250 respondents, between the ages of 20 and 30 with a college education and a monthly salary between 1,000 and 3,000 yuan. Surprisingly, most disagreed with the view of experts who claim the urban-rural difference is causing the widening gap. More than 70 percent of the respondents believed that “ the group of special interests” is the prime reason for the polarization, followed by “people in power” 68 percent, and “bosses” 50 percent.
Another unexpected finding is that almost all agreed that a good educational background and knowledge were not the decisive factors in gaining wealth. About 95 percent said rich people are not necessarily those who are able to speak English or have a college education.
Today in China, rich people , accounting for 10 percent of the population, control 45 percent of the total social fortune, and poor people, also 10 percent of the population, only control 1.5 percent, according to an investigation published by the National Bureau of Statistics last June.
【小题1】 It can be inferred that the Gini Coefficient ( in paragraph 2) would probably be _____.

The __________ of his books among parents and the recommendation of experts both at home and abroad have quickly made him a celebrity educator.

Recently quite a lot of experts _____ that another law on wildlife protection ____ as soon as possible.

A. suggested; must be passed      B. have suggested; be passed

C. were suggesting; was passed    D. suggested; being passed

It’s a goal for millions and millions of families every year——keep the Christmas spending within a certain amount, but can still afford the gifts that your loved ones will enjoy. Never has this concern been greater in recent years than right now. Even so, there are several things that you can do to help.

       Hit the sales.

No one wants to get up at four o’clock in the morning and fight to get the best deal on Black Friday, and it’s surely very tough to pick up the courage and get out there in the cold for a good deal, but sometimes——it can be well worth. Many retailers(零售商) offer specials all through the day——and some even offer online Black Friday specials, so you may still be able to get a great deal on Black Friday.

       Pay close attention to advertisements.

Once the Christmas shopping season is coming, retailers hungry for business will do just about whatever to get you in the store. Pay very close attention to weekly advertisements of sales among the major retailers and you may be lucky enough to find different prices for the same thing in different shops.

       Shop online.

Some of us don’t like running from store to store in order to get the best price on the perfect gift, and some of us don’t like to go out in the cold at all——thankfully for us, we can do online shopping.

       The world of online shopping lets people visit all the major retailers as well as some specialty stores that could only be found on the Internet. Customers can find exactly what they are looking for, at the best possible price without ever having to leave the house. With traditional Christmas shopping consumers are sometimes limited to what’s left in stock if they wait too long to get to a particular store.

The first paragraph implies that ______.

       A. nowadays not many people can afford expensive gifts

       B. recently many people don’t want to spend money on gifts

       C. Christmas is a time to make our loved ones enjoy their gifts

       D. Christmas is a time to make us feel free to buy our loved ones gifts

In the writer’s opinion, it is rewarding on Black Friday _____.

       A. if the weather is not very cold                B. if we don’t have to fight for the best deals

       C. if we don’t have to get up early                     D. If we get what we want at a good price

The underlined word “specials” means_______.

       A. some experts in shopping                       B. certain things for especially low price

       C. some kind of help for a certain customer D. things that can only be found on Friday

We can have more choices _____.

       A. on Black Friday                                    B. in a particular store

       C. on the Internet                                      D. from retailers

In this passage the writer means ______.

       A. to tell us the best way to do shopping

B. to attract more readers to do wise shopping

       C. to show us how hard it is to do Christmas shopping

       D. to give us advice on how to get a good deal at Christmas time