Some experts have said that ________ children...

Some experts have said that ________ children believe they can succeed, they will never become totally confident of themselves.

A．if　     B．since

C．once     D．unless

高三英语单项填空中等难度题查看答案及解析

It is a mystery that has puzzled doctors for decades. But experts believe they have now finally solved the tricky question of why winter is notoriously known as the flu season.

According to a new research, the influenza virus coats itself in a protective fatty shield that is tough enough to resist cold temperatures. The butter-like material only melts when it hits the respiratory tract（呼吸道）, leaving the virus free to infect cells-- a process scientists say is like an M&M melting in the mouth.

However, in warmer outdoor temperatures, the protective coating melts before it reaches a person or an animal, killing the bacteria before they can infect someone. Joshua Zimmerberg, from the National Institute of Child Health and Human Development (NICHD), in the US, which led the study, said: “Like an M&M in your mouth, the protective covering melts when it enters the respiratory tract. It's only in this liquid period that the virus is able to enter a cell to infect it.”

In the past, scientists worked on theories that flu is more common in winter because people spend more time inside or the radiation from the sun in summer kills off germs. But no research successfully explained the spread of the disease.

Researchers have already claimed that the report, which is published in the journal Nature Chemical Biology, could lead to new ways to prevent and treat flu. “Now that we understand how the flu virus protects itself so that it can spread from person to person, we can work on ways to prevent it.”

Influenza and other respiratory viruses are spread in small drops broadcast by coughing, sneezing and talking and which can also settle onto surfaces, to be picked up on fingertips.

1. What can be the best title of the passage?

A. The mystery that has puzzled doctors for decades.    B. New ways to prevent and treat flu.

C. A discovery of how flu strikes in Winter.            D. Ways found to prevent flu.

2. Which of the following statements is NOT true?

A. Doctors have been trying hard to discover why flu strikes in winter.

B. In the past, scientists didn’t know how flu spreads.

C. It is possible that flu virus will no longer threaten humans in winter.

D. People get affected by flu because they spend much more time inside in winter.

3. Where should you insert the following paragraph into the passage?

Duane Alexander, the director of NICHD, said: “The study results open new avenues of research for thwarting (使…受挫)winter flu outbreaks.”

A. Between Paragraphs 1 and 2.     B. Between Paragraphs 3 and 4.

C. Between Paragraphs 4 and 5.     D. Between the last two paragraphs.

4.In what process or order does flu occur?

a. The virus infects cells                 b. The influenza virus was born

c. The butter-like material melts           d. The virus hits respiratory tract

e. The virus coats itself in butter-like shield  f. The virus is free

A. a, c, d, e, b, f .     B. c, f, d, b, e, a.    C. b, e, d, c, f, a.    D. d, b, e, c, f, a.

高三英语阅读理解简单题查看答案及解析

There have always been a lot of commonly believed but exercise. Some people believe that they can’t help putting on hold that if they stop exercising, their muscles will turn into fat. Here are some more myths：

false ideas about being fat and doing weight as they get older, while others

I‘ll never lose weight一I come from a fat family

Wrong! While we can’t change the body type we are bom with, we can’t blame our genes for making us fat. There’s plenty of evidence that fatness runs in families, and the main reason is that they

share the same habits of eating too much and exercising too little.

I am fat because I burn calories slowly

Wrong! Fatness is not caused by a slow metabolism(新陈代谢). In fact, although fat people consume more energy than slim people，they also fail to realize how much they eat! Keeping a diary can help you work out your daily food intake more accurately.

Exercise is boring

Wrong! Anything will become boring if you do it repetitively. The key is to develop a balanced and varied program thafs fun as well as progressive. If you enjoy a Sunday walk，take a different route. If you do yoga，try a tai chi class. If you like swimming, set yourself a distance or time challenge.

No pain, no gain

Wrong! Exercise is not meant to hurt. Indeed, pain is your body telling you something’s wrong, and continuing to exercise could lead to serious injury. You may experience mild discomfort as you begin to exercise regularly, but this is your body adapting to the positive changes in your lifestyle and the aches should disappear relatively quickly. If they don’t, rest and seek medical advice.

1.What does the author think about being fat?

A.It is the family genes that make people fat.

B.People are fat because they consume too little energy.

C.A diary of exercise can prevent people from becoming fat.

D.It is the consequence of people’s unbalanced lifestyle.

2.According to the author, how can we make exercise more interesting?

A.By taking varied exercise.　　 B.By choosing simple exercise.

C.By doing regular exercise.　　 D.By sticking to outdoor exercise.

3.What is the author’s opinion about “No pain, no gain” in exercising?

A.Keeping fit is essentially a painful experience.

B.Exercise should be stopped if continuous pain is felt.

C.Pain in exercise is a precondition for reaching your goal.

D.Getting used to pain leads to positive changes in your body.

4.What is the purpose of the passage?

A.To declare the importance of keeping fit.

B.To clarify some misconceptions about fatness and exercise.

C.To confirm what has long been believed about keeping fit.

D.To explain some medical facts about being fat and doing exercise.

高三英语阅读理解中等难度题查看答案及解析

Some students believe that whether they have much money or large possessions, they will be happy. They believe that they will be able to do anything they wanted to do if they have money. Some students think that they should be good health, and enjoy whatever they like. Many students wish to have much wealth from their parents. In this way, they don’t have to work hardly and they can own everything. I don’t quite agree on the above points. I don’t think money means happy. We cannot buy much things with money, such as health, happiness and knowledge. I value knowledge, it makes me happy, for I can do a lot of for mankind with knowledge. Although different people value happiness differently, me wealth of happiness is in my study.

高三英语短文改错中等难度题查看答案及解析

A study notes that Some children are natural-born bosses. They have a strong need to make decisions, manage their environment, and lead rather than follow. Stephen Jackson, a Year One student, "operates under the theory of what's mine is mine and what's yours is mine," says his mother."The other day I bought two new Star Wars light sabers (剑). Later, I saw Stephen with the two new ones while his brogher was using the beat-up ones."

"Examine the extended family, and you'll probably find a bossy grandparent, aunt, uncle or cousin in every generation. It's a common inheritable trait," says Russell Barkley, a professor at the Medical University of South Carolina. Other children who may not be particularly bossy can gradually gain control　 when they sense their parents are weak, hesitant, or in disagreement with each other.

Whether it's inborn nature or developed character at work, too much control in the hands at the young isn't healthy for children or the family, Fear is at the root of a lot of bossy behavior, says family psychologist John Taylor. Children, he says in his book From Defiance to Cooperation, "have secret feelings of weakness" and "a desire to feel safe." It's the parents' role to provide that protection.

When a "boss child" doesn't learn limits at home, the stage is set for a host of troubles outside the family. The overly willful and unbending child may have trouble obeying teachers or coaches, for example, or trouble keeping friends. It can be pretty lonely as the top dog if no one likes your bossy ways.

"I see more and more parents giving up their power," says Barkley, who has studied bossy behavior for more than 30 years."They bend too far because they don't want to be as strict as their own parents were. But they also feel less confident about their parenting skills. Their kids, in turn, feel more anxious."

1.Bossy children like Stephen Jackson _____.

A. make good decisions

B. show self-centeredness

C. lack care from others

D. have little sense of fear

2.The underlined phrase "inheritable trait" in Paragraph 2 means _____.

A. inborn nature　　　　 　　 B. accepted theory

C. developed character　　 D. particular environment

3.The study on bossy behavior implies that parents _____.

A. should not set limits for their children

B. should give more power to their children

C. should be strict with their children　 properly

D. should let children find sense of safety by themselves

4.It can be inferred from the last two paragraphs　 that bossy children may become

A.relaxed and confident　 B. hesitant and weak

C.lonely and anxious　　 D.willful and unbending

高三英语阅读理解中等难度题查看答案及解析

Some foreign cartoons for children have been banned on the ________ that they are too violent.

高三英语单项填空简单题查看答案及解析

Some　　 experts　 believe　 that　 the students,　 once ______ to computer games, will probably lose opportunities of progressing.

A.addicting B.addicted C.having addicted D.being addicted

高三英语单项填空中等难度题查看答案及解析

"They didn't take measures in time, otherwise the explosions ____．"some experts said．

A．wouldn't happen                      B．didn't happen

C．wouldn't have happened              D．mustn't have happened

高三英语单项填空中等难度题查看答案及解析

Some experts believe ________ our personalities are largely determined by genetic factors.

A．that B．whether C．what D．how

高三英语单项填空中等难度题查看答案及解析

Although there seemed some signs of recovering, experts said that few, _____, could come back to normal after getting this disease.

A. if any        B. if ever  C. if not    D. if so

高三英语单项填空简单题查看答案及解析