The importance of saving gas_______be stresse...

The importance of saving gas_______be stressed too much. Automobiles use up some 70 billion gallons of gas a year.

高二英语单项填空简单题查看答案及解析

Stress is one of the most common causes of health problems in modern life. Too much stress results in physical, emotional, and mental health problems.

There are numerous physical effects of stress. Stress can affect the heart. It can increase the pulse rate, make the heart miss beats, and can cause high blood pressure. Stress can affect the respiratory (呼吸的) system. It can lead to asthma and cause a person to breathe too fast, resulting in a loss of important carbon dioxide. Stress can affect the stomach. It can cause stomachaches and problems of digesting food. These are only a few examples of the wide range of illnesses and symptoms resulting from stress.

Emotions are also easily affected by stress. People suffering from stress often feel anxious. They may have panic attacks and feel tired all the time. When people are under stress, they often overreact to little problems. For example, a normally gentle parent under a lot of stress at work may yell at a child for dropping a glass of juice. Stress can make people angry, moody, or nervous.

Long-term stress can lead to a variety of serious mental illnesses. Depression, an extreme feeling of sadness and hopelessness, can be the result of continued and increasing stress. Alcoholism and other addictions often develop as a result of overuse of alcohol or drugs to try to relieve（释放）stress. If stress is allowed to continue, then one’s mental health is put at risk.

It is obvious that stress is a serious problem. It attacks the body. It affects the emotions. Untreated, it may eventually result in mental illness. Stress has a great influence on the health, our feelings and our minds. So, reduce stress: stop the world and rest for a while.

1.What physical effects does stress result in?

A.Overreacting to little problems.

B.Making blood pressure low.

C.Suffering from depression.

D.Increasing the pulse rate.

2.Which one belongs to the emotional problem?

A.Alcohol abuse.

B.Drug addiction.

C.MuchAnxiety.

D.Heartbeat missing.

3.What does the fourth paragraph mainly talk about?

A.Stress causing mental problems.

B.Stress causing physical problems.

C.Stress causing emotional problems.

D.Stress causing panic attacks.

高二英语阅读理解中等难度题查看答案及解析

We _____ estimate the spirit of the Shanghai Expo too much, which is sure to play an important role in our daily life.

A. may not      B. should not     C. must not       D. cannot

高二英语单项填空困难题查看答案及解析

Sitting too much is linked to changes in a section of the brain that is important for memory, according to a recent study by UCLA researchers of middle-aged and older adults.

Studies show that too much sitting, like smoking, increases the risk of heart disease, diabetes and premature death. Researchers at UCLA want to see how sedentary behavior (sitting for long periods of time) influences the health of the brain, especially regions of the brain that are important to memory formation.

UCLA researchers gathered 35 people aged 45 to 75 and asked about their physical activity levels and the average number of hours per day they spent sitting over the previous work. Each person had a high-resolution MRI (热分辨磁共振成像)scan, which provides a detailed look at the medial temporal lobe, or MTL, a bruin region involved in the formation of new memories.

The researchers found that sedentary behavior is an important predictor of thinning of the MTL and that physical activity, even at high levels, is mil enough to compensate the harmful effects of silting for long periods.

“This study does not prove that too much sitting causes thinner brain structures, but instead that more hours spent sitting are associated with thinner regions,” researchers said. In addition, the researchers focused on the hours spent sitting, but did not ask participants if they took breaks during this time.

The researchers next hope to follow a group of people for a longer duration to determine if sitting cause the tinning and what role gender (性別), race, and weight might play in bruin health related to silting.

“MTL thinning can be an indication of cognitive (认知的) decline in middle-aged and older adults. Reducing sedentary behavior may be a possible target for measures designed to improve bruin health in people at risk for Alzheimer’s disease,” researchers said.

1.What is the study done by UCLA mainly intended to find out?

A. What harm sitting too much causes.

B. Why silting too much is like smoking.

C. How too much sitting affects brain health.

D. Whether too much sitting causes early death

2.Participants were scanned by a high-resolution MRI to 　　 .

A. evaluate their memory loss

B. examine their MTL conditions

C. record their physical activity levels

D. record the length of lime for their sitting

3.What do UCLA researchers think of their study?

A. It in a great success.

B. It is little practical value.

C. It must target the young.

D. It still needs to be improved.

4.What can be the best title for the text?

A. Long Sitting Is Bad for Your Brain

B. How to Improve Brain Health

C. Sitting Causes Many Health Problem

D. An Easy Way to Prevent Memory Loss

高二英语阅读理解中等难度题查看答案及解析

Zengzi(曾子505---435BC), a Chinese philosopher and student of Confucius(孔子)，1. (believe) to be the author(作者) of Daxue. One day, as Zengzi’s wife set off(出发) for the market，her little son insisted on(坚持) going with her， 2. (make) a tearful scene(场面).

“Stay at home,”she said to the boy, “When I come back, I 3.(kill) the pig for you to eat.”

When she got back from the market, Zengzi was prepared to catch the pig and kill it. His wife stopped him, saying I was only kidding(开玩笑) to 4. when I said that.” “Children can’t be humored(幽默) 5. this way. ” he replied, “They have little 6. (understand). They learn from their parents and listen to 7. they say. To lie to him is to teach him to lie to 8..” Her son will not trust her any more　 9. a mother lies to him. This is not the way to teach 10. child. With that, Zengzi went to kill the pig and then cooked it for his son.

高二英语其他题中等难度题查看答案及解析

The girl being a child of _______ intelligence, expecting too much of her would make her nervous.

A. average          B. slight               C. strange              D. different

高二英语单项填空中等难度题查看答案及解析

It’s important for you teenagers to know how to save money. You know that the money you save can be for rainy days and be used to pay through your college education. If you think it’s a difficult task and don’t know how to do it, please do as the following.

1.　　　　　　

My dad always tells me that if one doesn’t respect money, it will never respect you. Hence, it’s important that you keep a record of your daily expenses. Make it a habit to write down all that you have spent. And when you find out the total expenses at the end of the month, you will realize what you have spent more money in doing. 2.　　　　　　

Open a savings account.

Opening a savings account is a better way to save money. You can set a goal; say (for example), the money is for a new notebook or for college, and then save, until you have enough money to buy a notebook or until you go to college. 3.　　　　　　

Do not carry much cash.

Do you have the habit of not leaving a store without buying anything? The only way to stop that is carrying less money around with you. Go to the store with the minimum amount of money, which will not even help you buy a drink. 4.　　　　　　

Save the changes.

Save the changes that you get back. If you have gone to a shop to buy something and get back some changes, then do not spend them. 5.　　　　　　 And you’ll be surprised at the huge amount of money after days.

Follow these tips above, and thus you can save a lot of money. And surely, they’ll help you to be more responsible in your life.

A. Keep a record of your daily expenses.

B. After a few days, you’ll get rid of this habit.

C. Instead, you can save them in your piggy bank.

D. By that time, you will realize the importance of saving money.

E. Saving money builds your financial power and personal freedom.

F. Next month, you will automatically try and save more in that part.

G. Nowadays in the developed and developing countries, people are all working for the sake of earning money.

高二英语其他题中等难度题查看答案及解析

—The cars give off a great deal of waste gas in the streets.

—Yes. But I'm sure something will be done to 　　　air pollution.

A. reduce　　 B. remove

C. collect　　 D. warn

高二英语单项填空中等难度题查看答案及解析

To save as much language diversity as possible in the face of its rapidly dying out, researchers suggest using “evolutionary trees”, a tool from conservation biology.

One of the world’s 7,000 languages disappears every other week, and half might not survive the 21st century, experts say.

When setting conservation goals, ecologists use evolutionary trees—diagrams that show how biological species are related to one another—to identify species that have few close relatives. Such species are said to be evolutionarily distinct. Similarly, recent advances in the construction of language trees make it possible to measure how unique a language is.

“Evolutionary trees have transformed our understanding of how life has evolved and helped us to decide which species most need conserving,” says Jonathan Davies, senior author of the new study.

“The rapid rate of language loss, as well as limited resources for preservation（保护）, means that we must choose carefully where to focus our efforts,” adds Max Farrell, a PhD student in Davies’ lab. “The more isolated (孤立的) a language in its family tree, the more unique information it contains and eventually contributes to language diversity.”

As a case study, they used this approach to rank 350 Austronesian languages, spoken in islands spread across Southeast Asia and the Pacific Ocean.

For each of these languages, the researchers combined measures of evolutionary distinctiveness (ED) and global endangerment (GE) to produce an “EDGE” score. The language with the highest score, which means it is extremely distinct（不同的） yet nearly dying out, was Kavalan, a language native to Tai Wan. The next-highest scores went to Tanibili, an endangered language in the Solomon Islands.

By building trees for other language groups, language specialists could target preservation efforts and help reduce the loss of language diversity in the future, the researchers say.

1.What can an evolutionary tree show in biology?

A. The relation among species.

B. The concept of each species.

C. The conservation measures of each species.

D. The different uses of different species.

2.Why do researchers build language trees?

A. To increase the variety of languages.

B. To make languages easier for new learners.

C. To aim their effort at endangered languages.

D. To choose the best way to study languages.

3.What does it mean if a language gets the highest EDGE score?

A. It is unique to a special area.　　 B. It is widely used in the world.

C. It is similar to other languages.　　 D. It is in danger of dying out.

4.What can be the best title for the text?

A. Evolutionary Trees, Symbols of Languages

B. Evolutionary Trees, Tools to Record Species

C. To Save Dying Languages, Use Evolutionary Trees

D. To Show Language Diversity, Choose Evolutionary Trees

高二英语阅读理解中等难度题查看答案及解析

In the future your automobile will run on water instead of gas! You will be able to buy a supercomputer that fits in your pocket! You might even drive a flying car!

For each prediction that has come true today, several others have missed by a mile. Many of these predictions didn’t consider how people would want to use the technology, or if people really needed it in their lives or not. Let’s look at some predictions from the not-too-distant past.

Robot Helpers

Where’s the robot in my kitchen? Nowhere, of course. And he’s probably not coming anytime soon. Robots do exist today, but mostly in factories and other manufacturing environments.

Back in the 1950s, however, people said that by now personal robots would be in most people’s homes.

So why hasn’t it happened?  Probably because robots are still too expensive and clumsy. And maybe the idea of robots cooking our dinners and washing our clothes is just too weird. At home we seem to be doing fine without them.

Telephones of Tomorrow

In 1964 an American company introduced the video telephone. They said by the year 2000 most people would have a video phone in their homes. But of course the idea hasn’t caught on yet.

Why? The technology worked fine, but it over—looked something obvious: people’s desire for privacy. Would you want to have a video phone conversation with someone after you just step out of the shower?  Probably not---it could be embarrassing! Just because a technology available doesn’t always mean people will want to use it.

And finally, how about that crazy prediction of the flying car? It’s not so crazy anymore! But a flying car remains one of the most fascinating technology ideas to capture our imagination. Keep watching the news, or perhaps the sky outside your window, to see what the future will bring.

64. The whole passage is mainly about ________________.

A. predictions that have come true.        B. predictions that haven’t come true.

C. why predictions don’t come true easily.  D. what technology will bring about.

65. The author of this passage won’t believe that _________________.

A. predictions needn’t consider people’s practical use of technology.

B. the future isn’t always easy to guess.

C. not all past predictions have come true.

D. many of the high—tech things our parents thought we’d be using by now simply never appeared.

66. The underlined word “weird” probably means __________.

A. wonderful   B. stupid    C. practical    D. strange

67. What does the author think of the flying car?

A. It is too difficult to imagine.  B. It is too crazy an idea.

C. It is likely to be made.       D. It is often reported in the news.

高二英语阅读理解简单题查看答案及解析