An aging society is one 10% or more of its population is over 60.A. which B. where C. whose D. when 题目和参考答案——青夏教育精英家教网—

题目内容

An aging society is one ____ 10% or more of its population is over 60.

A. which B. where C. whose D. when

练习册系列答案

相关题目

阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的适当形式。

Fast food is becoming more and 1.________ popular in China, especially among children and teenagers. There are several explanations for its popularity. First, it is very convenient and 2. a lot of time. You just go into a fast food restaurant to order your food, and your food is ready immediately. 3. , you can either eat it there or 4. it away. Third, the environment of fast food restaurants is both clean and5. （comfort）. Fourth, excellent service6. (provide) and the quality of food is high. 7. , fast food isn’t healthy enough. It is usually not a balanced diet and low in nutritional value. Fast food is only a good choice when you are in a(n) 8. and have it once in a 9. . So I would say that It’s good for people, especially children, to eat fast food as 10. as possible.

Our body clock, or natural body rhythm, influences our energy and alertness. Paying attention to it can help us choose the suitable time of the day when we best perform specific tasks.

The reality, however, is that most of us organize the time around work demands, school deadlines, commuting or social events. Doing whatever the body feels like doing is a luxury in today’s fast-paced modern society.

But that doesn’t mean it isn’t worth trying. Obeying our body clock has significant health benefits. Disrupting our natural body rhythm, on the other hand, has been linked to problems such as depression, obesity, or headache, says Steve Key, a biology professor.

When the body clock can synchronize (使……同步) the rhythms of its natural processes, it “gives us an advantage in daily life”, says Key.

According to him, when it comes to cognitive (认知的) work, most adults perform best in the late morning. As our body temperature starts to rise just before awakening in the morning and continues to increase until midday, our memory, alertness and concentration gradually improve.

However, he adds, our ability to concentrate typically starts to decrease soon thereafter. Most of us are more easily distracted (分心) between noon and 4 pm.

Alertness also tends to fall after eating a meal and sleepiness tends to peak around 2 pm, making that a good time for a nap.

Surprisingly, tiredness may increase our creative powers. For most adults, problems that require open-ended thinking are often best dealt with in the evening when they are tired, according to a study in the journal Thinking & Reasoning.

When choosing a time of the day to exercise, paying attention to your body clock can improve results. Physical performance is usually best from about 3 to 6 pm, says Michael Smolensky, a professor of biomedical engineering.

Of course, not everyone’s body clock is the same, making it even harder to synchronize natural rhythms with daily plans.

1.If we know our natural body rhythm well, we can ______.

A. find out the suitable time to do specific tasks

B. organize our time around work demands

C. do whatever our body feels like doing

D. be sure to be healthy

2.Which of the following is NOT true?

A. Our alertness is influenced by our natural body rhythm.

B. Doing whatever your body feels like is very difficult in our modern society.

C. Obeying our body clock is good for our health.

D. Disrupting our natural body rhythm must lead to obesity.

3.Inspiration (灵感) to solve a difficult problem will most probably come to us

______.

A. when we get up in the morning

B. when we are tired in the evening

C. when we are full of energy in the late morning

D. when we are asleep at night

4.Which of the following can be the suitable title for the passage?

A. What is natural body rhythm?

B. Natural body rhythm is good for us.

C. Something about natural body rhythm.

D. The latest research about natural body rhythm.

Almost 80% of the Americans have stated their opposition to cloning pet animals such as cats and dogs, yet companies still try to make a business out of selling cloned pets. Pet cloning has been promoted as a way to “bring back” or “copy” a beloved companion animal. However, studies have shown that cloning remains an experimental technology with many failures.

Behind each lovely picture of a cloned cat or dog lie hundreds of animals that were kept in lab cages, receiving bad treatment to produce just that one cloned animal. For all that, you end up with a cloned animal who is unlikely to appear like the original physically or behaviorally and may experience serious health problems. Also, while pet cloning companies are charging customers up to $150,000 for a cloned pet, millions of homeless animals of the same species are available in US animal shelters for around $100. Unfortunately, most of these animals are killed for lack of adopting homes.

With No Pet Cloning campaign, the American Anti-Vivisection Society (AAVS) tries to protect both animals and people from harm. They campaigned until the US companies that sold cloned animals closed their doors. First it was Genetic Savings & Clone Inc. and then it was BioArts International.

When BioArts was closed, its owner, Lou Hawthorne, finally had to acknowledge the problems of pet cloning. According to Hawthorne, he has seen numerous failures during his pet cloning attempts, “One clone----which was supposed to be black and white----was born greenish-yellow where it should have been white (we still have no good explanation for how that happened).”

The AAVS is educating the public about the animal suffering and is seeking regulation of cloning activities. They will continue to take the lead in protecting animals from the threats of pet cloning.

1.From the passage, we know that ____.

A. pets are often deserted by their owners

B. more and more people have joined the AAVS

C. most American are against cloning pet animals

D. the American Anti-Vivisection Society is supported by the government

2.According to the passage, companies keep on selling cloned pets to ____.

A. carry on scientific studies

B. get economic interests

C. protect pet animals

D. comfort animal lovers

3.What does the author try to do by writing the second paragraph?

A. To tell the truth behind pet cloning.

B. To show the method of pet cloning.

C. To compare pet animals with homeless ones.

D. To save the animals kept in labs and shelters.

4.The underlined word “acknowledge” probably means ____.

A. accept B. study C. admit D. manage

5.According to the passage, the AAVS devotes itself to ____.

A. getting most countries to fight against pet cloning

B. improving the technology of pet cloning

C. saving lots of animals from bad situations

D. stopping US companies’ selling cloned animals

I sent my invitation to a wrong address by mistake. Otherwise, Mr. Green ____ to me.

A. would have replied B. had replied

C. would reply D. replied

He is so ____ in writing his report that he has no time to take a walk.

A. devoted B. attached C. abandoned D. occupied

When building houses, people used to think about not only the climate of the areas but also the building materials and the fashions for their houses. However, since electricity became more and more expensive, people began to pay much more attention to the energy they could get for their houses and the new ways they could find to protect their houses from both cold and heat.

Houses of an old yet new type have been widely built. In some parts of the world, people share their houses with their livestock (家畜). During cold weather, they gather their cows, goats, or other animals and keep them on the first floor of their houses. The reasons are that the animals can be protected from the cold and that they can help to heat the houses as well. The body heat given off by the animals rises to the second floor of the houses, where people live. By sharing their houses with their livestock, people gain a source of heat.

People who live in or near cities do not usually keep livestock. However, home builders use the fact that heat rises. This natural law can be used in building houses in these areas. Instead of keeping livestock on the first floor, builders fill it with large rocks. As they are open to the sun’s rays during cold weather, these rocks take in heat. They also give off the heat, and, of course, the warm air rises into the living areas of the houses. So these houses are energy saving.

House building becomes a great challenge to building designers and energy engineers. They try to meet this challenge by learning from old traditions and by using modern technology. And someday in the future, people will be able to live in more energy saving houses.

1.What did people begin to consider as electricity was no longer cheap?

A．The climate of their areas

B．The energy for their houses

C．The fashions for their houses

D．The building materials for their houses

2.People in some areas gain a source of heat by _________.

A．Keeping their livestock downstairs

B．Protecting their livestock from the cold

C．Sharing their houses only with their cows

D．Living on the second floor with their livestock

3.The underlined words “natural law” in the third paragraph refer to the fact that ________.

A．Heat raises the temperature in the houses

B．Heat increases the temperature of rocks

C．Heat goes up if temperature is raised

D．Heat goes in the upward direction

4.From the passage, we can infer that __________.

A．People will no longer consider building materials in the future

B．Energy saving buildings will become more popular in the future

C．Almost all people will move into the houses heated by large rocks

D．Energy engineers will devote themselves only to modern technology.

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

How to Be Confident

We are all human and have weaknesses. Even if your physical appearance or social skills aren’t what you wish they were, that doesn’t have to stop you from being confident. 1._____

*Make a list of special talents you have, or things you do that are good—morally（道德上） or otherwise. It doesn’t have to be a specific skill；it can be an approach or an attitude that you hold through life. 2.____ Are you very patient with people? Do you always see the humorous side of things? Are you always there for your friends?

*3._____ When you feel strongly about something, speak loudly and clearly and make eye contact with people. People will judge you all the time, and usually they’ll misjudge you anyway, so why bother trying to live up to their opinions at all?

*Take care of yourself. Eat a healthy diet and get enough exercise. Don’t abuse your body, don’t overload it, and don’t deny it any of the things it needs. At the same time, don’t obsess(沉迷). 4.____ Those things are only band-aids(权宜之计） and make-up. Confidence comes from within. In order to be confident, you must value yourself and understand that your well-being is important.

*Improve your posture. 5._____ Don’t drop your shoulders. Make sure that your back is straight, your shoulders are square, and your chest sticks out slightly (but stay loose, otherwise you’ll appear stubborn （固执的）and nervous). Good posture also helps with deep breathing, which helps with feeling calm and relaxed.

A. Here’s how to believe in yourself.

B. But smiling at yourself in the mirror helps you to love yourself, thus making you a bit more confident.

C. Buying all the moisturizers (润肤霜) and creams will not bring you closer to who you want to be.

D. It is surprising how powerful the simple step of taking action can be.

E. Do you always stay calm, cool and collected, even in hurried situations?

F. Having good posture can actually make you feel more confident.

G. Know that you have important things to say and do.

书面表达

假设你是新华中学的学生李华，几天前你收到一封来自你朋友Linda的email。全文如下：

Dear Li Hua，

How are you these days? As you know, I’m already a senior high school student. I want to travel alone this winter vacation. But my parents don’t agree with me. I just can’t understand them. I need your advice.

Linda

请根据所给材料，给Linda 写封回信，要点包括

(1).她父母不同意的可能理由，

(2).表明你对此事的态度，

(3).给Linda提出合理的建议。

字数：100-120左右；可适当增加细节，以使行文连贯；

信的开头和落款已为你写好，不计入总词数。

Dear Linda,

I’m glad to receive your letter asking for my advice. From your letter, I know that your parents don’t agree with your idea that you want to travel alone this winter vacation.

________________________________________________________________________

Li Hua

试题分类