BYou carry a 1.3 kg mass of fatty material in...

B

You carry a 1.3 kg mass of fatty material in your head that controls everything you will ever do. This fantastic control center lets you think, learn, create, and feel emotions. It also controls everything your body does. What is this amazing machine? It’s your brain — a structure so amazing that the famous scientist James Watson called it ＂the most complex thing we have yet discovered in our universe＂.

Imagine your kitten jumped onto the kitchen counter, and was about to step onto a hot stove. You would have only seconds to act. In situations like this, your brain reads the signals from your eyes and quickly calculates when, where and at what speed you need to run to save her. Then it tells your muscles to move. No computer can match your brain’s great ability to download, process, and react to the flood of information from your eyes, ears and other sensory organs.

If a bee lands on your foot, sensory neurons(神经元) in your skin send this information to your brain at a speed of more than 240 kilometers per hour. Your brain then uses motor neurons to send a message back to your foot: Shake the bee off quickly! Motor neurons can send this information at more than 320 kilometers per hour!

Your brain contains about 100 billion tiny cells: neurons — it would take you more than 3,000 years if you tried to count them all. Whenever you dream, laugh, think, see or move, tiny chemical and electrical signals are racing between these neurons along billions of tiny neuron pathways. Believe it or not, the activity in your brain never stops. Countless messages fly around inside it every second, like a super-fast game of table tennis. Your neurons create and send more messages than all the phones in the entire world. And although a single neuron generates only a tiny amount of electricity, all your neurons together can generate enough electricity to power a light bulb.

1.By ＂the most complex thing＂, James Watson means __________.

A. a supercomputer 　　　　　 B. the universe

C. human brains 　　　　　　 D. our emotions

2.Which of the following statements is true according to the 2nd and 3rd paragraph?

A. Brains can download more information than any computer.

B. The kitten plays an important role in testing human brain power.

C. Motor neurons in human brains serve to send countless messages.

D. Your brains can use neurons to send messages back faster than bees’.

3. The author mentions ＂to power light bulbs＂ (Para. 4) to show __________.

A. neurons can send lots of messages

B. how many active tiny cells brains contain

C. how much electricity brains can generate

D. there is countless information in the brain

4.What is the main idea of the passage?

A. Powerful brain is a wonderful machine.

B. Brains work well in controlling body movements.

C. Brain is the most complex structure in the universe.

D. Human brains are composed of numerous neurons.

高二英语阅读理解中等难度题查看答案及解析

The manager told us that very little ____ was made of the waste material in the past.

高二英语单项填空中等难度题查看答案及解析

We all know what it is like to be unable to turn your head because of a cold in the muscles of your neck, or because an unexpected twist has made your neck ache and stiff. Your whole body feels tight. The slightest move makes you jump with pain. Nothing could be worse than a pain in the neck. That is why we use phrase to describe some people who give you the same feeling. We have all met such people.

One is the man who always seems to be clapping his hands—often at the wrong time—during a performance in the theater. He keeps you from hearing the actors.

Even worse are those who can never arrive before the curtain goes up and play begins. They come hurrying down to your row of seats. You are comfortably settled down, with your hat and heavy coat in your lap. You must stand up to let them pass. You are proud of your self-control after they have settled into their seats…Well, what now…Good God, one of them is up again. He forgot to go to the men’s room, and once more you have to stand up, hanging on to your hat and coat to let him pass. Now, that is “a pain in the neck.”

Another, well-known to us all, is the person sitting behind you in the movies. His mouth is full of popcorn; he is chewing loudly, or talking between bites to friends next to him. None of them remain still. Up and down, back and forth, they go for another bag of popcorn, or something to drink.

Then, there is the main sitting next to you at a lunch counter smoking a smelly cigar. He wants you to enjoy it too, and blows smoke across your food into your mouth.

We must not forget the man who comes into a bus or subway car and sits down next to you, just as close as you will let him. You are reading the newspaper and he leans over and stretches his neck so that he can read the paper with you. He may even turn the paper to the next page before you are ready for it.

We also call such a person a “rubberneck”, always putting out his neck to where it does not belong, like neighbors who watch all your visitors. They enjoy invading your privacy. People have a strong dislike for rubbernecks. They hate being spied upon.

1.Where can you find this passage?

A. Medicine dictionaries.  B. A travel guide.

C. Social science books.     D. Students text books.

2.How do you feel when late comers walk back and forth in front of you in a cinema?

A. Disturbed.     B. Ignored.         C. Bored.  D. Relaxed.

3.A “rubberneck” often ________.

A. says bad words behind people

B. quarrels face to face with neighbors

C. bargains the price with sales women

D. asks about other people’s business

4.Which of the follow is “a pain in the neck”?

A. Someone who helps you find your seat in a movie theatre.

B. Someone who smokes in a smoking section on a train.

C. Someone who throws trash out of his car window on the highway.

D. Someone who goes to the doctor for his severe pain on the neck.

高二英语阅读理解中等难度题查看答案及解析

Imagine there is a bank that puts $ 86, 400 in your account each morning. It carries over no balance from day to day. Every evening the bank writes off(注销) the balance that you failed to use during the day. What would you do? Take out every cent, of course!

Each of us has such a bank. Its name is TIME. Every morning, it puts in 86, 400 seconds. Every evening it writes off, as it is lost. There is no balance or overdraft. If you fail to use the day's savings, the lost is yours. There is no going back. There is no taking from “tomorrow”. You must make good use of it so as to get more in health, happiness and success!

The clock is running. Make the most of today. To realize the value of ONE YEAR, ask a student who failed a grade; To realize the value of ONE MONTH, ask a mother who gave birth to a premature(早产) baby; To realize the value of ONE WEEK, ask the editor of a weekly newspaper; To realize the value of ONE HOUR, ask the lovers who are waiting to meet; To realize the value of ONE MINUTE, ask a person who missed the train; To realize the value of ONE SECOND, ask a person who just avoided an accident.

Make good use of every moment that you have. Remember that time waits for no one. Yesterday is history. Tomorrow is a mystery. Today is a gift. That's why it's called "The Present".

1.The underlined word "balance" in paragraph 1 means _______________.

A.贷款　　　　 B. 余款　　　　 C. 平衡　　　　 D. 提款

2. What is special about the TIME bank we each have?

A. We can store time in it whenever we like.

B. Someone puts $ 86, 400 in it every day.

C. Someone helps you spend your time every night.

D. The time in it will surely get lost if you don't use it.

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

A. The Bank of Money　　　　　　　　　　 B. The Clock is Running

C. The Bank of Time　　　　　　　　 　 D. The Value of One Hour

高二英语阅读理解中等难度题查看答案及解析

Eating too much fatty food，exercising too little and smoking can raise your future risk of heart disease. But there is another factor that can cause your heart problems more immediately：the air you breathe.

Previous studies have linked high exposure（暴露）to environmental pollution to an increased risk of heart problems, but two analyses now show that poor air quality can cause heart attack or stroke（中风） within as little as a few hours after exposure. In one report of the research, scientists found that people exposed to high levels of pollutants（污染物）were up to 5% more likely to suffer a heart attack within days of exposure than those with lower exposure. Another study of stroke patients showed that even air that the U.S. Environmental Protection Agency（EPA）considers to be of　 “moderate”(良好) quality and relatively safe for our health can raise the risk of stroke as much as 34% within 12 to 14 hours of exposure.

The authors of both studies stress that these risks are relatively small for healthy people and certainly modest compared with other risk factors such as smoking and high blood pressure. However, it is important to be aware of these dangers because everyone is exposed to air pollution regardless of lifestyle choices. So stricter regulation by the EPA of pollutants may not only improve environmental air quality but could also become necessary to protect public health.

1.The text mainly discusses the relationship between _________ .

A. heart problems and air quality

B. heart problems and exercising

C. heart problems and smoking

D. heart problems and fatty food

2.The underlined word “modest” in Paragraph 3 most probably means _________ .

A. relatively high　　　　　　　　　　　 B. extremely low

C. relatively low　　　　　　　　　　　　 D. extremely high

3.We can learn from the text that __________？

A. eating fatty food has immediate effects on your heart.

B. the EPA conducted many studies on air quality.

C. moderate air quality is more harmful than smoking.

D. stricter regulations on pollutants should be made.

4.The author’s purpose of writing the text is most likely to _________ .

A. inform　　　　　 B. persuade　　　　　 C. describe　　　　　 D. entertain

高二英语阅读理解中等难度题查看答案及解析

Eating too much fatty food，exercising too little and smoking can raise your future risk of heart disease. But there is another factor that can cause your heart problems more immediately：the air you breathe.

Previous studies have linked high exposure（暴露）to environmental pollution to an increased risk of heart problems, but two analyses now show that poor air quality can cause heart attack or stroke（中风） within as little as a few hours after exposure. In one report of the research, scientists found that people exposed to high levels of pollutants（污染物）were up to 5% more likely to suffer a heart attack within days of exposure than those with lower exposure. Another study of stroke patients showed that even air that the U.S. Environmental Protection Agency（EPA）considers to be of　 “moderate”(良好) quality and relatively safe for our health can raise the risk of stroke as much as 34% within 12 to 14 hours of exposure.

The authors of both studies stress that these risks are relatively small for healthy people and certainly modest compared with other risk factors such as smoking and high blood pressure. However, it is important to be aware of these dangers because everyone is exposed to air pollution regardless of lifestyle choices. So stricter regulation by the EPA of pollutants may not only improve environmental air quality but could also become necessary to protect public health.

1. The text mainly discusses the relationship between _________.

A. heart problems and air quality　　　　 B. heart problems and exercising

C. heart problems and smoking　　　　　　 D. heart problems and fatty food

2. The underlined word “modest” in Paragraph 3 most probably means _________ .

A. relatively high　　　　　　　　　　　　　 B. extremely low

C. relatively low　　　　　　　　　　　　　　 D. extremely high

3. We can learn from the text that __________？

A. eating fatty food has immediate effects on your heart.

B. the EPA conducted many studies on air quality.

C. moderate air quality is more harmful than smoking.

D. stricter regulations on pollutants should be made.

4.The author’s purpose of writing the text is most likely to _________ .

A. inform　　　　　 B. persuade

C. describe　　　 D. entertain

高二英语阅读理解中等难度题查看答案及解析

Eating too much fatty food, exercising too little and smoking can raise your future risk of heart disease. But there is another factor that can cause your heart problems more immediately: the air you breathe.

Previous studies have linked high exposure (暴露）to environmental pollution to an increased risk of heart problem, but two analyses now show that poor air quality can lead to heart attack or stroke (中风）within as little as a few hours after exposure. In one review of the research, scientists found that people exposed to high levels of pollutants (污染物）were up to 5% more likely to suffer a heart attack within days of exposure than those with lower exposure. A separate study of stroke patients showed that even air that the U. S. Environmental Protection Agency (EPA) considers to be of “moderate” (良好）quality and relatively safe for our health can raise the risk of stroke as much as 34% within 12 to 14 hours of exposure.

The authors of both studies stress that these risks are relatively small for healthy people and certainly modest compared with other risk factors such as smoking and high blood pressure. However, it is important to be aware of these dangers because everyone is exposed to air pollution regardless of lifestyle choices. So stricter regulation by the EPA of pollutants may not only improve environmental air quality but could also become necessary to protect public health.

1.The text mainly discusses the relationship between ______ .

A. heart problems and air quality

B. heart problems and exercising

C. heart problems and smoking

D. heart problems and fatty food

2.The underlined word “modest” in Paragraph 3 most probably means ______ .

A. relatively high　　　　 B. extremely low

C. relatively low　　　　　 D. extremely high

3.The author’s purpose of writing the text is most likely to _______.

A.describe　 B. persuade　　 C. inform　　　 D. entertain

高二英语阅读理解中等难度题查看答案及解析

B

YOU CAN HELP!

Everyone was born with his own built-in burglar(窃贼) alarm. It’s called the sense of sight and sound．Unfortunately, many of us go around with the alarm switched off.

We don’t see the stranger wandering outside the house next door.

We don’t notice the sounds from the flat upstairs.

(Weren’t they supposed to be on holiday?)

The police can only do so much to prevent crime. There never can be enough of them to guard every home in every town. So they need your help in fighting with the burglars，the vandals（恣意破坏者）, and the car thieves.

Not, of course, by setting out to have a go every time you see something suspicious. It’ll always be the job of the police to arrest criminals.

But by acting as a line of communication between them and your community, for instance, you probably know far more about your immediate neighborhoods than the police ever could.

A stranger in someone’s garden would probably be far more obvious to you than it would to even the local police, if, of course, you were on the look-out.

That’s the whole idea behind the Neighborhood Watch schemes, springing up around the country to create a spirit of watchfulness within a community, anything suspicious being reported to the police.

It’s early days yet, but results so far are very encouraging. The crime figures are already dropping in many of the areas running the scheme. And all due to people like you.

61. The underlined word “them” refers to “______”.

A. criminals          B. the police   C. neighbors   D. strangers

62. The advertisement points out that many people______.

A. are not ready to help the police

B. are not as watchful as they could be

C. don’t look after their gardens well

D. don’t tell their neighbors about their holidays

63. One of the ways we could help prevent crime is to______.

A. turn on the alarm system in our home

B. try to stop criminals from escaping

C. look out for people behaving suspiciously

D. inform the police if we hear noises upstairs

64. The purpose of the advertisement is to __________in their neighborhood.

A. ask people to join the police force

B. advise people how to protect their homes

C. warn people about the increasing risk of crime

D. encourage people to be on watch for possible crime

高二英语阅读理解简单题查看答案及解析

You’d better carry a(n) ________ tyre in the back of your car in case it breaks down on the way.

A. extra          B. free               C. convenient         D. spare

高二英语单项填空简单题查看答案及解析

You'd better carry a(n)________tyre in the back of your car in case it breaks down on the way.

A. extra             B. free              C. convenient    D. spare

高二英语单项填空中等难度题查看答案及解析