Keep an eye on the health of your teeth

What is the strongest part of your body? Your head? Bones? No. it’s your teeth! There is a special thing 51 enamel (牙釉质) in teeth. It is the hardest thing in the human body and keeps bacteria (细菌) away. However, teeth are easy to be hurt. September 20 is national Teeth-loving Day in China. Let’s 52 the health of our teeth.

Teeth problems are common around the world. Most children and young adults have tooth decay (龋齿). A study published on China Health Monthly magazine this year showed that 40.74 percent of a sample of 1,306 Chinese students 53 age 15 had decayed teeth.

Food that is rich in sugar increases the risk of tooth decay. After you eat, bacteria go crazy over the sugar on your teeth, like ants at a picnic. The bacteria turn sugar into acids (酸) that eat away at tooth enamel. This causes 54 in your teeth.

Another common problem is crooked teeth (龅牙). When your new teeth begin to grow and the old teeth haven’t fallen out, there isn’t enough space for the new ones. This causes crooked teeth.

Don’t worry. Here are some ways to keep your teeth 55 .

* Brush 56 twice a day – in the morning and before bedtime.

* Learn to use dental floss (牙线). The floss gets rid of food that’s hidden where your toothbrush can’t get it.

* Visit a dentist. He or she can 57 if you have any dental problems and help you clean your teeth.

* Take notice of what you eat. Plan your diet 58 . It’s better to eat lots of fruits and vegetables instead of fries ad drink water instead of soda.

* Wear braces (牙套) to make your teeth straight and beautiful.

IV. Complete the sentences with the given words in their suitable forms(用括号中所给单词 的适当形式完成下列句子。每空格限填一词)(共8分)

59. We were shown quite a few ________ of Beijing last night. (photo)

60. Mr. Jackson lives on the ________ floor, so he has a better view.(twenty)

61. If you don’t go on a diet, it’s ________ for you to lose weight. (possible)

62. It is a wise ________ for these patients to give up smoking. (choose)

63. Most of the students are ________ with the style of the new school uniform. (satisfy)

64. Neither of them knows ________, so I have to ask a third person for help. (France)

65. “Your job is to ________ customers well, please keep it in mind” The manager said. (service)

66. The Chinese were the first to use paper money, ________ as early as the eleventh century. (probable)

V. Rewrite the following sentences as required(根据所给要求，改写下列句子。每空格限填一词) (共14分)

67. The government tried to find some ways to solve the pollution problem. (改为一般疑问句)

________ the government ________ to find some ways to solve the pollution problem?

68. They surfed the Internet to gather some information about the earthquake. (对划线部分提问)

________ ________ they surf the Internet?

69. Mary is very warm-hearted.(改为感叹句)

________ ________ warm-hearted girl Mary is!

70. Our monitor is too weak to play football any more. (保持原句意思)

Our monitor is not ________ ________ to play football any more.

71. The professor will give us a lecture on the effect of green house next Monday. (改为反意疑问句)

The professor will give us a lecture on the effect of green house next Monday, ________ ________?

72. Tom’s grandpa grows tomatoes in the field every year. (改为被动语态)

Tomatoes ________ ________ by Tom’s grandpa in the field every year.

73. The teacher didn’t answer my question. He asked me another question. (合并为一句)

The teacher asked me another question ________ of ________ my question.

Part 3 Reading and Writing (第三部分 读写)

VI. Reading comprehension (阅读理解): (共50分)

Choose the best answer(根据短文内容，选择最恰当的答案) ( 12分)

Shopping used to mean actually going to shops, but nowadays, you can shop without even leaving your house. Just sit in front of your computer, click your mouse and your things will be sent to your house in a couple of days.

November 11th is a big day for people who like shopping online. On that day last year, many online stores offered a big discount and free delivery service. The biggest online shopping sites in China, Taobao.com. and Tmall.com., sold things worth 19.1 billion yuan in total.

“Goods online are often much cheaper. It also saves me a lot of time. And we often have more goods on many online stores than in shopping malls,” Wang Xin, an online shopping lover in Beijing, said to China Daily. She stayed up very late for a lot of cheap goods online. She spent several thousand on what she bought that day.

Another big advantage of online shopping is that it helps people get things from different cities, even different countries, with ease (轻松地). “I like eating duck neck very much and I often buy it on Taobao from shops in Wuhan. It’s much more delicious than what our local (当地的) stores sell, but cheaper,” said Zang Xin, a girl in Yangzhou.

While enjoying online shopping, many people also have worries, especially for middle school student buyers. Young students are easily attracted by advertisements on the Internet and buy things they don’t need.

“Middle school students should pay more attention to their study. Searching for things wastes their time,” said Jing Chunling, an education expert. “In addition, online shop owners have no idea of the ages of their buyers. Anyone can easily buy things that they want to. Some of goods are even bad for young students such as cigarettes and wine.”

( ) 74. Nowadays many people like shopping online instead of _________.

A. clicking their mouses B. paying money

C. sitting in front of their computers D. going to shops

( ) 75. Taobao.com and Tmall.com are the biggest _________ in China.

A. online shopping sites B. traditional shops

C. companies D. sellers

( ) 76. According to the article, which of the following is not an advantage of shopping

online?

A. It can save people time and money.

B. Online stores have better quality goods.

C. People can buy things from different places.

D. Online stores may have more kinds of goods.

( ) 77. People worry about students shopping online because students _________.

A. are easily attracted to buy useless things

B. may depend too much on online shopping

C. haven’t met the online store owners

D. may buy nothing with a lot of money

( ) 78. _________ persons are mentioned (提到) in this passage.

A. Two B. Three

C. Four D. Five