Question

Bad teeth can be painful -- and worse. They can even be deadly. Infections (感染) of the gums (牙齦) and the teeth can cause bacteria (細(xì)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 (牙齒保健) 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 (琺瑯質(zhì)) , the hard surface on teeth, to help prevent holes from forming.

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

A．Concerns for Healthy Teeth of the Young

B．Causes of Teeth Problem

C．Importance of Healthy Teeth of All

D．Solutions to Teeth Problem

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

A．How to develop babies' teeth.              B．How to keep babies' teeth clean

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

3.The passage indicates that ______.

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

B．Breast milk can cure babies' bad teeth

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

D．Babies' teeth should be brushed once per day

4.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．the doctors should be responsible for the case

C．babies with bad teeth can easily die

D．the boy was not fed with his breast milk

 

Answer 1

【答案】

1.A

2.B

3.C

4.A

【解析】

試題分析：這篇文章主要講了壞牙不僅會(huì)影響成年人的健康，還會(huì)影響兒童的健康。

1.根據(jù)全文內(nèi)容以及And adults are not the only ones at risk．故選A。

2.根據(jù)全文內(nèi)容以及Experts at the National Institutes of Health say good dental care starts at birth.故選B。

3.根據(jù)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.所以答案為C。

4.根據(jù)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.所以答案為A。

考點(diǎn)：健康保健類短文閱讀理解

點(diǎn)評(píng)：要想答好題目，重在理解全文意思。這篇文章比較難，先看問(wèn)題，再帶著問(wèn)題讀短文，找出各段落的主旨句，理解全文內(nèi)容，總結(jié)全文中心，然后再回到問(wèn)題上來(lái)，很容易選出正確答案。多了解一些常識(shí)性知識(shí)有利于閱讀理解。如果對(duì)文章的相關(guān)背景有所了解，讀起文章一定既省時(shí)又省力。因此，在學(xué)習(xí)過(guò)程中，了解各方面的背景知識(shí)是十分重要的。