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It is generally believed that we are getting cleaned when we step under a shower. 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 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 weak immune system might need to worry.He told the New York Times that the bacteria 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 that 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.
However, 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.
Pace explained that he wanted to understand the natural microbial environments of public places. This kind of knowledge might help discover the microbes to be used in a bioterrorist (生物恐怖分子) attack.
小題1:From the finding of Norman R. Pace, after taking a shower, we might cough or feel tired because      .
A.it’s easy to get a cold when taking a bath
B.the showerhead carries many bacteria causing illness
C.we don’t get cleaned while showering
D.we don’t get a weak immune system
小題2:According to the passage, which of the following is TRUE?
A.Hot water could kill most of bacteria in showerheads.
B.Of 45 showerheads surveyed in nine cities, 30 carried large amounts of Mycobacterium.
C.Changing showerheads is the only way to avoid microorganisms.
D.Shower water contains much less bacteria after being left to run for 30 seconds.
小題3:We can learn from the third paragraph that       .
A.having a shower in the morning is more dangerous than at other time
B.the bacteria always threat people’s health
C.there is no reason to fear microorganisms for people with strong immune system
D.it is better to do some exercise in the morning than have a shower
小題4:The underlined word “pose” in the third paragraph probably means “______”.
A.cause B.avoid C.describeD.promise
小題5:What contributes to fresh air in US subways?
A.The train’s movement.B.Iron particles.
C.Train wheels.D.Air conditioners on the trains.

小題1:B
小題2:D
小題3:C
小題4:A
小題5:A

試題分析:文章介紹Norman R. Pace和他的團隊發現的結果,大多數淋浴頭含有致病的細菌,但是這不會對人的健康有危害,但是免疫力差的人要注意,他還研究了美國的地鐵,結果發現,地鐵里面的空氣是新鮮的。
小題1:細節題:從文第一段的句子:A showerhead carries thousands of bacteria called Mycobacterium.These can cause problems like coughs and tiredness, and a general feeling of poorliness可知根據Norman R. Pace 的發現,我們在洗過澡后會感冒會咳嗽,因為淋浴頭會攜帶很多致病的細菌,選B
小題2:細節題:從文章第四段的句子: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 that when the water is just turned on.可知淋浴水在流了30秒后,細菌就少多了。選D
小題3:推理題:從第三段的句子:Only those with a weak immune system might need to worry.可知對免疫力強的人沒有必要害怕微生物,選C
小題4:猜詞題:從第三段的句子:But Pace said that they pose few threats to the health.可知這些微生物對健康幾乎不能造成威脅。所以pose相當于cause,所以選A
小題5:細節題:從文章第五段的句子: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.
可知美國的地鐵里面,火車的運動對新鮮空氣是有幫助的,選A。
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Driver Alert is based on a computerized wristband. The device, worn by drivers or pilots gives out a sound about every four minutes during a car journey. After each sound the driver must respond by squeezing the steering wheel(方向盤). A sensor in the wristband detects this pressing action and measures the time between the sound and the driver’s response.
Tiredness is directly related to a driver’s response time. Usually, a watchful driver would take about 400 milliseconds to respond, but once that falls to more than 500 milliseconds, it suggests that the driver is getting sleepy.
In such cases the device gives out more regular and louder sounds, showing that the driver should open a window or stop for a rest. If the driver’s response continues to slow down, the sounds become more frequent until a nonstop alarm warns that the driver must stop as soon as possible.
The device has been delivered to the department’s laboratories for testing. If these tests, scheduled for six months’ time, are successful, the makers will bring the product to market within about a year.
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B.By touching the wristband.
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科目:高中英語 來源:不詳 題型:閱讀理解

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The study shows that musical harmony can be learnt, and it is a matter of training the brain to hear the sounds. So if you thought that the music of some foreign culture (or Jazz) sounded like the crying of cats, it’s simply because you haven’t learnt to listen by their rules.
The researchers used 66 volunteers with a range of musical training and tested their ability to hear combinations of notes(音符) to determine if they found the combinations familiar or pleasing. They found that people needed to be familiar with combinations of notes. If they found the notes unfamiliar they also found the sound unpleasant. This finding put an end to centuries of theories claiming that physical functions of the ear determine what we find attractive.
The study found that trained musicians were much more sensitive to unpleasant notes than non-musicians. When they couldn’t find the note, the musicians reported that the sounds were unpleasant, while non-musicians were much less sensitive. This shows the importance of training or nurturing(培養) the brain to like particular sound of combinations of notes, like those found in jazz or rock.
Depending on their training, a strange chord(和弦) sound was pleasant to some musicians, but very unpleasant to others. This showed us that even the ability to hear a musical note is learnt.
To confirm this finding, they trained 19 non-musicians to find the notes of a random selection of western chords. Not only did the participants’ ability to hear notes improve rapidly, afterward they reported that the chords they had learnt sounded more pleasant -- regardless of how the chords were played.
The question of why some combinations of musical notes are heard as pleasant or unpleasant has long been debated. “We have shown in this study that for music, beauty is in the brain of the beholder(觀看者)”, a researcher said.
小題1:According to the study, people find foreign music quite unpleasant because_____.
A.they hear the music much too often
B.they don’t like the person playing it
C.they have no idea about how to listen
D.they have no born musical ability at all
小題2:Although non-musicians were less sensitive to music, they can still_____.
A.be trained to like particular music
B.make friends with real musicians
C.find the beauty of chords without training
D.enjoy the beauty of music when played by musicians
小題3:The 19 non-musicians were trained in order to show_____.
A.the brain likes particular combinations of notes
B.not a strange note was pleasant to all musicians
C.how the chords were played was very important
D.people’s ability to hear a musical note can be learnt
小題4:What is the main idea of the passage?
A.Love of musical harmony can’t be taught.
B.Love of music is not natural but nurtured.
C.Listening to music can improve your brain.
D.You can be a musician without being trained.

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