We all have our own idea of what the perfect ...

We all have our own idea of what the perfect smile should look like,whether we show a mouthful of whites or keep our lips closed and turned up at the corners.When we think of the perfect smile,we often picture someone grinning,with all of our teeth showing,but based on new findings,less is actually more.Nathaniel He1wig and his colleagues at the University of Minnesota discovered that a successful,genuine smile actually rests less on showing teeth and more on facial balance and symmetry(对称).

For the study,researchers looked at 3D computer-animated facial models of more than 800 study participants.The computer-animated facial models went through a series of facial transformations,with researchers changing the mouth angle,amount of teeth shown,the degree of the smile.Participants were then asked to rate the models’smiles based on effectiveness,genuineness and pleasantness.

The results of the study found that the most successful smile had a perfect balance of teeth,an ideal mouth angle,and a smile length that extended to what was called the“sweet spot”.Smiles that showed a quick sync(同步)of the left and right side of the face during smiling were also more highly related.

Smiling makes up a good part of our nonverbal(非语言的)communication,making it important to have a grin that will draw people to you and also seem sincere.It’s also worth noting that perfect smile could help improve your health too.

1.What is the possible meaning of the underlined word“grinning”in the first paragraph?

A. Talking softly.　　 B. Smiling widely.

C. Chatting cheerfully.　　 D. Eating healthily.

2.Which aspect should be considered when rating the smiles in the study?

A. How pleasant it makes people feel.

B. Whether it improves health.

C. How successful smiling people are.

D. Whether it lasts long enough.

3.What makes the perfect smile based on the new study?

A. White teeth.　　 B. Smile length.

C. Facial balance.　　 D. Lip corners.

4.Where does this text probably come from?

A. A book review.　　 B. A science report.

C. A history textbook.　　 D. A travelling guide.

高三英语阅读理解简单题查看答案及解析

首先，请阅读下列的应用文：

A. Chapter One. …you probably have an image in your mind of what the “perfect’ or “ideal” body looks like. Try not to press yourself to look that way. Each person is born with genes that control the shape of his/her body. Everyone is different. It’s important to be comfortable with the body you have.

B. Chapter Two. …You use energy for everything you do. That energy comes from the food you eat. Too much food or too little exercise causes your body to store the extra energy in fat cells. But, if you exercise regularly and eat a healthy diet, you’ll feel healthier and stronger not to mention look great.

C. Chapter Three. … Your body runs best on foods high in carbohydrates（碳水化合物） and low in fat and sugar. Eating a healthy diet will provide your body with everything it needs to run smoothly. Your body breaks down proteins into amino acids(氨基酸), so you don’t need to take in the amino acids separately.

D. Chapter Four. …Exercise does more than just burn calories. For instance, regular exercise makes your muscles strong and flexible, and increases the amount of muscle you have. It also makes your heart stronger and lowers your blood pressure; …

E. Chapter Five. …Always warm up and stretch for 5-10 minutes before you do strength or endurance exercises. Afterwards, take 10 minutes to cool down. Your heart should beat normally when you stop. Exercising with a group may help you to exercise regularly.

F. Chapter Six. …Supplementation of a mixture of essential amino acids will increase protein synthesis (蛋白质综合体). While supplementing with either carbohydrate or amino acids(氨基酸) may limit muscle damage and stimulate (激励) protein synthesis, there is increasing evidence that the combination can have an addictive effect.

以下是与上述章节相关的读者，请匹配读者和他/她需要了解的相关信息的所在章节。

1. Charity He always breathes heavily and his heart beats irregularly when he finishes his exercise. He wonders whether there is something wrong with his body or whether he is not suited for physical exercises.

2.Wander She likes eating meat a lot every day as she thinks that meat can provide people with energy. Besides, she does sports on weekends. However, she is not energetic enough to face the pressure.

3.Helly She has tried many ways of keeping fit, but she still gets fat because of stress from work. She doesn’t look well.

4.Tammy He is a Grade One college student majoring in gymnastics. He must write a passage about what a healthy body is.

5.Pandy He is a coach, working in a gym. He will start a new course next month on how to lose weight. For the first few lessons, he is going to talk about why people have to exercise.

高三英语信息匹配中等难度题查看答案及解析

We all have ideas about what kinds of foods are good or bad to eat. As a result, people from one culture often think the foods that people from another culture eat are unacceptable. Many people would find it terrible to eat rats, but there are forty-two different cultures whose people regard rats as proper food.

Food likes and dislikes do not always seem related to nutrition. For example, broccoli (花椰菜) is first on a list of the most nutritious common vegetables, but it is twenty-first on a list of vegetables that Americans like most to eat. Tomatoes are sixteenth on the list of most nutritious vegetables, but they are first on the list of vegetables that Americans like most to eat.

But dislikes is not the only reason why some cultures will not eat a certain food. In some cultures, certain foods are taboo. Taboo is a word from the language of the Fiji Islands that is used to describe something that is forbidden. We do not usually think about why certain things are taboo in our culture.

One example is that Americans do not eat dogs, although people from some other cultures regard them as good food. In the United States, dogs are very important to people as pets. They are usually regarded as part of the family, almost like a child in some cases. In addition, dogs have value as protection against criminals (罪犯). Actually, the dog’s place in society as a companion makes the dog taboo as food.

Scientists believe that most food likes and dislikes are a result of the ways of life of different people. People will not eat pets such as dogs. Americans eat a lot of beef because there is plenty of land for raising cattle and their meat can be shipped cheaply for long distances by railroads.

1.The writer uses the example of rat as food to show that ________.

A. some cultures may seem rather strange

B. understanding between different cultures is easy

C. people may eat very different things

D. eating properly is very difficult

2.What is the second paragraph mainly about?

A. People don’t often consider nutrition as important.

B. Some vegetables are more nutritious than others.

C. Broccoli and tomatoes are common vegetables.

D. Americans like broccoli better than tomatoes.

3.Why is eating dogs a taboo in America?

A. It is a taboo from the Fiji Islands.

B. It is against American laws.

C. Dogs are needed by the police.

D. Dogs are close to human life.

4.What can be a suitable title for the passage?

A. Nutritions and Beliefs.

B. Food and Culture.

C. Taboo about Food.

D. Science in Eating.

高三英语阅读理解中等难度题查看答案及解析

---What do you think of the house?

---_____.It is everything we have been looking for.

A．Perfect           B．Good idea         C．Not bad           D．So-so

高三英语单项填空中等难度题查看答案及解析

Choosing the right college for you is not so easy. You should have a general idea of what you want and don’t want. The idea can guide you to find what fits your needs best.1.

Think about what major you want to study in college. If you know that, just look at colleges that have your major.2.So think carefully about your major and interests before choosing one.

Where the college is located matters. Anyone who tells you the location isn’t important is lying.3.If you look forward to working in the publishing industry, New York may be your best bet. If your parents want you to stay close to home, please don’t consider anywhere that requires a plane ticket to get to.

Think about how much you can afford. Are your parents paying for your education? If so, how much are they willing to spend? Do you have to contribute anything? Financial aid and scholarships exist, but don’t count on anything. 4.These are all things to consider before you fall in love with a college.

Make sure you’re going to spend time with the right people. The cool thing about college is that each different one attracts different kinds of people. For the first thing in your life, you get to choose where you get to spend your time and who you get to spend it with. 5.Make sure that the people you’re with for four years are your kind of people.

A. College is about learning what you love.

B. You’d better choose a major that is popular.

C. Go to the college with some people you like.

D. Remember, above all, it is the people that make the place.

E. Are you willing to go into major debt over a school?

F. If you don’t like cold weather, stay away from northern schools.

G. These guidelines will help figure out what college you want to go to.

高三英语七选五中等难度题查看答案及解析

Choosing the right college for you is not so easy.You should have a general idea of what you want and don't want.The idea can guide you to find what fits your needs best.1.

Think about what major you want to study in college.If you know that,just look at colleges that have your major. 2.So think carefully about your major and interests before choosing one.

Where the college is located matters.Anyone who tells you the location isn't important is lying.3.If you look forward to working in the publishing industry,New York may be your best bet.If your parents want you to stay close to home,please don't consider anywhere that requires a plane ticket to get to.

Think about how much you can afford.Are your parents,paying for your education? If so,how much are they willing to spend?Do you have to contribute anything? Financial aid and scholarship exist,but don't count on anything.　　 4.These are all things to consider before you fall in love with a college.

Make sure you're going to spend time with the right people.The cool thing about college is that each different one attracts different kinds of people.For the first thing in your life,you get to choose where you get to spend your time and who you get to spend it with.5.Make sure that the people you're with for four years are your kind of people.

A.College is about learning what you love.

B.You'd better choose a major that is popular.

C.Go to the college with some people you like.

D.Are you willing to go into major debt over a school?

E.Remember,above all,it's the people that make the place.

F.If you don't like cold weather,stay away from northern schools.

G.These guidelines will help figure out what college you want to go to.

高三英语七选五中等难度题查看答案及解析

We all have an idea about the common types of environmental problems. 1.But, the fact is, it does affect mankind, other living forms and the environment as a whole.

What is light pollution? 2.The obvious cause of light pollution is the use of outdoor lighting products improperly. It can be office lighting, car headlights, station lights, streetlights and many more.

3.Upon studies, it is found that obvious effects are observed in the behaviour of night animals, for bright light at night makes it difficult for these animals to hunt, wander and perform their regular activities. light pollution is directly or indirectly responsible for causing several plant diseases. Its effects are related to disturbance in the physical rhythm, which contributes to risks of developing cancer cells. So, it’s nothing less than a threat to human health.

You have already seen the negative effects of light pollution on creatures. Apart from this, the actual cost of misused light is about millions of dollars every year. It also leads to the release of greenhouse gases and global warming4.

While outdoor lighting and using man-made lighting products are part of our modern lifestyle, some simple ways will surely help in reducing light pollution. For example, while installing outdoor lighting, make sure that they are pointed downwards5. Believe it or not, many people living in the urban areas cannot view clear sky and stars at night. Let’s contribute our part in reducing the pollution.

A. Light pollution is harmful to both animals and plants.

B. It presents all forms of misused man-mad light.

C. After all, fuels are used for producing electricity

D. Also, use only the required lighting equipment for both home and offices.

E. Citizens should be forbidden to install outdoor lighting

F. Light pollution affects animals’ normal activities in the daytime.

G. However, light pollution may be a new term to many of us.

高三英语七选五中等难度题查看答案及解析

We must apply what we have learned to our work because in no case ______ from practice.

A. should theory separate　　 B. theory should be separated

C. theory should separate　　 D. should theory be separated

高三英语单项填空简单题查看答案及解析

We all have storms through our lives. But we have no right to make everyone else suffer with our own 31.

The carpenter I 32 to help me restore an old farmhouse had just finished a(n) 33 first day on the job. A flat tire made him lose an hour of work, his electric saw quit, and now his truck 34 to start.

While I drove him home, he sat in stony 35 .

On arriving, he invited me in to meet his family. As we walked toward the front door, he paused 36  at a small tree, 37 tips of the branches with both hands.

When opening the door, he underwent a(n) 38 transformation. His tanned face was wreathed in smiles, and he 39  his two small children and gave his wife a kiss.

The next day my 40 drove me to ask him about what I had seen. “Oh, that’s my trouble tree,” he replied. “I know I can’t 41 having troubles on the job, but the troubles don’t 42 to the house with my family. So I just 43 them up on the tree. Then in the morning I pick them up again.”

“44 thing is,” he smiled, “when I come out in the morning to pick them up, there aren’t nearly as 45 as I remember the night before.”

Putting 46 around our problems is a really good idea --- it prevents our difficulties from spilling over onto loved people, who can’t do anything about our problems. Why 47 them if they can’t help us?

So, plant yourself a trouble tree outside and use it 48 you come home. Be grateful that you have loved ones to go home to 49 your loved one is simply your beloved dog. And when you picked up your troubles on the way each morning, be 50 that they’re not as heavy as they were the night before.

高三英语完型填空困难题查看答案及解析

We have got a general idea of how our new flat will be decorated, but nothing ______ at the moment.

A. ambiguous             B. ambitious      C. concrete                          D. permanent

高三英语单项填空中等难度题查看答案及解析