Most of us think that when we step under a shower we’re getting clean．We are, but we’re also giving a home to lots of tiny little creatures we didn’t even know about．
A showerhead carries thousands of bacteria (細(xì)菌) called Mycobacterium．These can cause problems like coughs and tiredness, and a general feeling of poorliness (身體不舒服)．When you turn on the water, the bacteria go from the showerhead onto and into your body．
This is a finding of Norman R．Pace and his team at the University of Colorado, in the US．The scientists investigated bacteria in all kinds of human environment, including showers．
Pace's team looked at 45 showerheads in nine American cities．They discovered that 30 percent of them had large amounts of flying Mycobacterium．
But Pace said that they pose few threats to the health．Only those with a frail (脆弱的) immune (免疫的) system might need to worry．
He told the New York Times that the bactertia are not as unpleasant as might be thought．He said that having a shower is no more dangerous than anything else we do in the morning．
But for those who feel sick about the idea of all those microorganisms (微生物), he had some advice．
Let the water run for 30 seconds before getting into the shower．Why? The number of bacteria is smaller than when the water is just turned on．If that seems like a waste of water, he added that you could also change your showerhead every few months．
But Pace had good news too．He has also been testing the air in US subways．Apart from iron particles (粒子), which are ground off the track by the wheels of trains, subway air is fresh．The reason is that a train’s movement pumps fresh outdoor air into the tunnels(隧道)．
Pace explained that he wanted to understand the natural microbial(微生物的) environments of public places．This kind of knowledge might help detect the microbes to be used in a bioterrorist (生物恐怖分子) attack．
49．According to the finding of Norman R．Pace, after taking a shower, we might ______．
A．get much dirtier                B．be covered by bacteria
C．get a frail immune system      D．catch a cough or feel tired
50．Pace’s research into showers shows that ______．
A．there is no reason to fear microorganism
B．shower water contains much less bacteria after being left to run for 30 second
C．having a shower in the morning is more dangerous than at other time
D．of 45 showerheads surveyed in nine cities, 30 carried large amounts of Mycobacterium
51．According to the research of Pace’s team, which of the following contributes to fresh air in US subways?
A．Train wheels．               B．Iron particles．
C．The movement of the trains． D．Air conditioners on the trains．
52．The word “detect” in the last paragraph probably means “______”．
A．to discover      B．to protect        C．to make   D．to prevent

49---52    DBCA  

49．D考查細(xì)節(jié)理解。第二段說，淋浴的噴頭上有數(shù)以千計(jì)的細(xì)菌，使用者會(huì)引起咳嗽、疲勞、身體不舒服的癥狀。
50．B考查細(xì)節(jié)理解。從第八段可知B項(xiàng)陳述正確。
51．C考查細(xì)節(jié)理解。第九段說，他們的研究發(fā)現(xiàn)，地鐵列車的來回移動(dòng)將外面的空氣抽到隧道里，因此地鐵的空氣很新鮮。
52．A考查猜測(cè)詞義。從語境看，劃線詞表示了解公共場(chǎng)合的自然微生物環(huán)境，了解這方面的知識(shí)能幫助我們“監(jiān)測(cè)/發(fā)現(xiàn)”恐怖分子的生物攻擊所使用的微生物。
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科目：高中英語 來源：不詳 題型：完形填空

Directions: Read the following passage. Complete the diagram by using the information from the passage.
Write NO MORE THAN THREE WORDS for each answer.
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科目：高中英語 來源：不詳 題型：閱讀理解

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科目：高中英語 來源：不詳 題型：閱讀理解

On June 5, 1981 the Centers for Disease Control in Atlanta, U.S. announced the presence of a rare, infectious disease in five American homosexuals(同性戀). Soon doctors were finding similar cases all over the country and the world. The AIDS epidemic(流行病)had officially begun. By 1983 it was clear that AIDS had spread around the world. More than twenty years later, AIDS has left twenty-six million dead and another forty million infected.  AIDS has become the worst medical disaster ever experienced by mankind.
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However, scientists still don't know exactly how and where AIDS started. Finding the source of AIDS could be important in developing a vaccine(疫苗) and be important in mapping the future course of the epidemic.
小題1:It can be inferred from the passage that       
A．a(chǎn)ntiretroviral drugs will be obtained easily all over the world
B．the best way to stop AIDS is to develop a vaccine
B．scientists will soon find a way to cure AIDS
D．there will be fewer AIDS cases in the world in the future
小題2:Which areas are the most worrying places where AIDS spreads quickly? 
A．Africa.B．Asia.C．The United States.D．France.
小題3:The number of AIDS cases has greatly decreased in the United States due to the fact
A．a(chǎn) team at the Pasteur Institute in Paris succeeded in separating HIV
B．some effective medicine has been invented
B．scientists understand AIDS better and better.
D．The rate of HIV infections continue to rise in the United States
小題4:What's the importance of the discovery of the source of AIDS?
A．It can be used to develop a test for AIDS.
B．It can stop HIV forming AIDS.
B．It can reduce the rate of death caused by AIDS.
D．It can help develop a drug to prevent AIDS.

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科目：高中英語 來源：不詳 題型：閱讀理解

There is an old saying in English： "Laughter is the best medicine". Until recently, few people took the saying very seriously. Now, however, doctors have begun to investigate laughter and the effects it has on the human body. They have found evidence that laughter really can improve people's health.
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小題1: We learn from the first paragraph that laughter____________________.
A．is good for one's health
B．is related to some illness
C．has been investigated long since
D．has no effect on the body
小題2:Doctors have found that laughter_______________________.
A．keeps down blood pressure.
B．has similar effects to physical exercise
C．decreases the heart rate
D．increases stress
小題3:Which of the following statements is NOT true of laughter, according to the passage?
A．It reduces pain.
B．It exercises the body.
C．It improves the body's immune system.
D．It can cure cancer.
小題4:The writer's attitude towards laughter is__________.
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科目：高中英語 來源：不詳 題型：閱讀理解

CANBERRA (Reuters Life!) - Think twice before eating those dropped crumbs off your computer keyboard -- you might as well be eating off a toilet seat, according to a new study on the amount of germs on keyboards.
A study by British "Which? Computing" asked a microbiologist to examine for bugs on 33 keyboards in a typical London office, a toilet seat and a toilet door handle.
Four keyboards were judged potential health hazards and the microbiologist recommended the removal of one keyboard as it had 150 times the pass limit of bacteria -- five times filthier than the swabbed toilet seat.
"Most people don't give much thought to the grime that builds up on their PC, but if you don't clean your computer, you might as well eat your lunch off the toilet," said Sarah Kidner, the consumer magazine editor of "Which? Computing" in a statement.
The study found that eating lunch at desks is the main cause of a bug-infested keyboard. Dropped crumbs and food encourages the growth of millions of bacteria.
Poor personal hygiene, such as not washing hands after going to the toilet, may also add to the dirtiness of keyboards.
But despite the health hazard of a dirty keyboard, a survey of 4,000 people by the magazine found one in 10 people ever cleaned their keyboard while another two in 10 never cleaned their mouse.
Almost half -- or 46 per cent -- cleaned their keyboard less than once a month.
To clear out bugs, the magazine recommends users unplug keyboards, turn them upside down and shake them.
小題1:The purpose of the passage is             .
A．tell us something about the keyboards.
B．warn people to clean the keyboards often.
C．tell us how to clean the keyboard
D．tell us the germs on keyboards
小題2:What do you think the expression “Think twice before eating those dropped crumbs off your computer keyboard” stands for?
A．Think several times before eating beside your computer
B．Don’t drop foods onto the computer keyboard.
C．Don’t eat foods dropped onto the computer keyboard.
D．Be careful when you are eating by the computer.
小題3:What are the main causes of a bug-infested keyboard?
A．Dropped crumbs and food encourages the growth of millions of bacteria.
B．Poor personal hygiene
C．Much dirt on the computer keyboard.
D．Dropped crumbs and food and Poor personal hygiene
小題4:"Which? Computing" is probably a name of            .
A．An organizationB．a(chǎn) newspaper
C．a(chǎn) reportD．a(chǎn) magazine

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科目：高中英語 來源：不詳 題型：閱讀理解


D
Everyone knows you must exercise regularly to keep good health. Indeed, staying physically fit is a big part of our culture. we consider（or rightly so）that healthy people are attractive people. Since most of us want to be attractive, there is no shortage of exercise clubs, training videos, magazines and books offering to help us stay physically fit.
Unfortunately, however, our culture doesn’t place the same emphasis on mental fitness. Although we tend to like men and women with strong, healthy-looking bodies, we don’t have the same degree of respect or attraction for smart, educated, mentally healthy people. This is a pity, because there are great rewards for people who have developed the ability to think well.
If your mind is well trained and flexible, you will be able to understand a great deal of what happens around you. And if you are also well educated --- that is, if you understand basic science, mathematics, music, art, literature, history and so on --- you will find it much easier to make good decisions throughout your life. Over the long run, this leads to a sense of control over your destiny and a much better life than otherwise.
People who are poorly educated or who don’t think well --- that is, people who are not mentally fit --- see things differently. Their world is controlled by mysterious, often malevolent（惡意的）forces. Such people live within a system they will never master, forced to follow rules they will never understand. Although it may not be obvious, most spend their lives being manipulated（控制）by others. They are told what to do, what to think, how to spend their money, and what they should and should not aspire（渴望）to in life.
In my opinion, if you want to live well, you must be able to use your mind well. For this reason, I want you to be able to concentrate, to solve problems, to understand complex ideas, and to think clearly and quickly. Such skills will make it easier for you to make informed decisions, understand current events, choose good friends, manage your money well, make wise lone-term decisions and appreciate music, art and literature.
The key to developing such skills is to enjoy learning, and to have the ability and motivation to teach yourself.
63. The writer of the passage feel disappointed that ____.
A. too little has been done to help people to keep physically fit
B. too much has been done to help people to keep physically fit
C. mentally healthy people are not as popular as physically healthy people
D. physically healthy people are not as popular as mentally healthy people
64. The underlined word “this” in the 3rd paragraph means ____.
A. the understanding of a great deal of what goes on around you
B. the understanding of basic science and mathematics
C. good training in body and mind
D. being able to make good decisions in life
65. The writer of this passage thinks those who are not mentally fit ____.
A. live a poor and mysterious life   B. can’t control over their life
C. often do what others do        D. enjoy being fooled and ruled
66. The best title of the passage will most probably be ____.
A. Train Your Body                  B. Train Your Mind  
C. Make Informed Decisions       D. Think Hard and Work Hard

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