Look closely at your hands. Are they clean? It doesn't matter how many times you wash your hands, tiny microbes (微生物) still stay on them. But don't worry. Most microbes don't harm you.
Now scientists say the microbes on our hands could be used in a surprising way; fighting crime, According to a recent survey microbes as well as fingerprints(指紋) could be used to indentify the criminal.
Everyone has his own set of microbes on the hands. That is to say, if you and your best friend were able to see and compare all the microbes on your hands, your hands probably would look different. Some microbes only show up on your hands while others live only on your friend's hands.
When you work on a computer you leave the microbes from your hands on the keyboard. The scientists can easily tell the owner of the keyboard by looking at the microbes on it. Even if you don't leave your fingerprints behind, your microbes may give you away.
Noah Fierer, a scientist, says. "You can only clean a fingerprint, but you can't sterilize (使無菌) a surface just by wiping(擦) it off," He says that scientists have a lot more work to do before the microbe is used as a useful tool.
小題1:According to the passage,_______ could be used to identify the criminal.
A．fingerprints B．scientists' hands
C．microbes D．fingerprints and microbes on people's hands
小題2:Paragraph 3 tells us that________.
A．our hands look similar B．the microbes will make the keyboard dirty.
C．we should compare hands oftenD．we have our own sets of microbes.
小題3:When you work on computer, the microbes________.
A．just stay on our handsB．a(chǎn)lso stay on the keyboard
C．will do harm to youD．will disappear
小題4:From Noah Fierer we know that________.
A．fingerprints are no longer useful in fighting crime
B．microbes can be found on everyone's hands.
C．unlike microbe fingerprints can be cleaned if people wipe them
D．the microbe is used as a useful tool
小題5:What’s the best title of the passage?
A．Microbes May Tell Who You Are B．Scientists Say Everyone Has Microbes
C．Noah Fiercer Does Research Into MicrobesD．Fingerprints Help Catch Criminals

小題1:D
小題1:D
小題1:B
小題1:C
小題1:C
主旨大意：文章介紹了手上的細菌也可以用來辨別人。
小題1:細節(jié)理解題。根據(jù)文章第一段的最后一句“According to a recent survey microbes as well as fingerprints(指紋) could be used to indentify the criminal.”可知正確答案是D。
小題1:細節(jié)理解題。根據(jù)第一段的第三句“This first came out of a restaurant in Singapore, but it is now very popular as the soup du jour in Chinese restaurants. ”可知正確答案是A。
小題1:推斷理解題。根據(jù)第一段的第三句“Everyone has his own set of microbes on the hands.”正確答案是B。
小題1:細節(jié)理解題。根據(jù)“You can only clean a fingerprint, but you can't sterilize (使無菌) a surface just by wiping(擦) it off,”。正確答案是C。
小題1:主旨理解題。通讀全文可知Noah Fiercer在研究細菌。正確答案是C。
練習冊系列答案
相關(guān)習題

科目：初中英語 來源：不詳 題型：閱讀理解


Every child has his own dream．Every child hopes to be an adult．However, is it truly like what they imagine? As a boy who lives in modem times and in a modern city，I feel greater pressure on me with the city’s development．Although we seldom worry about money, we still have a lot of others such as competitions among classmates and expectations from parents．These experiences are very helpful to our future．But in fact，they really give me a lot of pressure．I still clearly remembered the happiness of my childhood．Unluckily，we had to face the fact with time passing by．We began to feel this invisible(無形的)pressure come upon us．We get up before sunrise and return after sunset．we work and study like an adult，even harder．What we do is to get an excellent mark．Oh，growing up is completely boring．We must try to find happiness while growing up．I think the friendship among our friends，the support from our parents and the encouragement from our teachers can help us．Why not enjoy the pleasure of growing up and its delicious taste?
(    ) 6．The best title of the text is“_________”．
A．My dreamB．My worriesC．My pleasureD．My school life

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

Weather has a strong effect(影響) on people. It influences health, intelligence (智力) and feelings. In August, it is very hot and wet in the southern part of the United States. People there easily have heart trouble and other kinds of health problems during this month. In the Northeast and the Middle West, it is hot at some times and very cold at other times. People in those states will have heart trouble after the weather changes in February or March.
The weather can also influence intelligence. For example, in a 1983 study by scientists, the IQ scores of some college students were very high during storm, but after the storm, their scores were low. Storms can increase intelligence. Very hot weather, on the other hand, can decrease(減少) it. Students in many schools of the United States often do badly in exams in the hot months of the year(July and August).
Weather also has a strong effect on people’s feeling. Winter may be a bad time for thin people. They usually feel cold during these months. They might feel depressed during cold weather. In hot summer weather, on the other hand, fat people may feel unhappy. At about 65F, people become stronger.
Low air pressure(氣壓) makes people feel free, but it also increases forgetful- ness. People leave more bags and umbrellas on buses and in stores on low pressure days. There is a“perfect weather”for work and health. People feel best at a tempera- ture of about 64F with 65 percent humidity(濕度).
Are you feeling sick, sad, tired, forgetful, or very intelligent today? The weather may be the reason.
小題1:Intelligence may be lower______.
A．during a stormB．when it is sunny
C．on a very hot dayD．when you take in an exam
小題2: In the third paragraph,“depressed”means         .
A．興奮的B．愉快的C．憂郁的D．擔心的
小題3: In“perfect weather”,          .
A．both the fat and the thin are healthy
B．the students do very well in examinations
C．the air pressure is low
D．the humidity is 65 percent and the temperature is about 64F

查看答案和解析>>

科目：初中英語 來源：不詳 題型：完形填空

A mother planted many kinds of vegetables in her garden. One day, she said to her 31________, “Betty, come here. Look at all these little yellow marks on the 32________ of the cabbages. They are eggs of a kind of insect(蟲子). They are very beautiful but very bad for cabbages. This afternoon you must 33________ all the eggs on the leaves and kill them. In this way, you will help us have 34________, greener and bigger cabbages.”
Betty didn’t think she could do it 35________ and in the end she forgot all about it. The mother fell ill for a few days and 36________ work in her garden. When she was well, she took Betty with her to the garden to see the cabbages. To 37________ surprise, the insects had eaten every leaf. When Betty saw this, she began to 38________. Then her mother said to her, “We should never put off what we have to do today till 39________. And you must learn to deal with the bad things while they are small, 40________ it will turn into a big problem.
小題1: A son  B. mother   C daughter 
小題2:A tress   B. leaves   C. grass
小題3: A find   B. eat   C. fly
小題4: A worse   B better   C thinner
小題5:A at most   B at last   C at once
小題6:A must   B couldn’t   C need
小題7:A my   B their   C his
小題8: A cry   B wait   C run
小題9:A yesterday   B today   C tomorrow
小題10:A. but      B. or     C. and

查看答案和解析>>

科目：初中英語 來源：不詳 題型：完形填空

Who taught you to walk when you were little? Who worries the most when you are   56 ? Who makes you dinner? It’s your   57  . No matter what happens, she’ll   58  the love for you.
Do you know how did   59    Day come into being(產(chǎn)生) ? It began in the US in 1907 whenan    60   girl named Anna Jarvis started a campaign to honor(給......以榮譽) mothers. Shebelieved that mothers could   61  people to get over the   62  of the War and to strengthen (加長) the relationship inside families.
On Mother’s day, children usually help their mothers do    63  . In western countries, bringing mothers  64  in bed is common. A mother will get up late while her children make her favorite breakfast. Children also make their own Mother’s Day card    65  a thank-you note. Or they buy gifts and flowers for their mothers.
小題1: A. lazy B. ill C. sleepy
小題2:A. father B. mother C. sister
小題3: A. continue B. stop C. start
小題4:A. Children’s B. Women’s C. Mother’s
小題5: A. Asian B. Australian C. American
小題6:A. help B. ask C. order
小題7:A. worry B. pain C. memory
小題8: A. homework B. housework C. hair
小題9: A. flowers B. clothes C. breakfast
小題10: A. with B. for C. from

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

The computers changed our lives in the 1980s, the Internet changed our lives in the 1990s, and the robots will change our lives in the new century.
Do you think there will be robots in people’s homes? It’s not a dream that every home will have a robot.
Now, robots are not only able to help people do the housework, they can also help the doctors do the difficult operations, play chess with people, play the piano and so on.
A new cooking robot is used in Beijing. It can cook all the dishes on the menu, you only need to wait two to four minutes, in the future, the robot will be a nurse, a security guard, or a partner in your life.
Experts(專家) believe robots will be used everywhere from the industrial( 工業(yè)的) robots to service robots. In the future, robots will become part of the family, and provide else service for people. We all look forward to the new robot age.
小題1:     changed our lives in dm 1990s.
A. The robots         B. The compilers     C The TV sets      D. The Interact
小題2: According to the passage, we know that a new cooking robot is being used in          .
A．the futureB．BeijingC．many countriesD．many families
小題3:What can the robots do now?
A. They can help people do the housework.
B. They can help the doctor do the difficult operations
C. They can play chess with people.
D. A, B and C.
小題4:Experts believe robots will be used           .
A．only in a hospitalB．only in a filmily
C．only in a factoryD．everywhere
小題5:Which is the best title(標題) of the passage?
A．The computers changed our livesB．Robots can cook
C．Robots are comingD．Robots will be doctors

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

This is not a diet. It’s a simple way to lose weight. And you don’t even have to give up the food you love or join a gym (健身房). You just follow some habits that thin people have. Keep them, and you’ll become thin.
A. Wake-up
When you wake up in the morning, sit up slowly without using your hands. With legs straight out, bend(彎曲) forward until you feel sore（酸痛） in your back. It will bum about 10 calories.
B. Start with soup
When you have a meal, order a clear soup, and have it before having the main food. In this way, you’ll feel fuller, so you’ll eat less when the main food comes.
C. An apple (or more) a day
Apples are full of fiber and water, so your stomach will want less. The study shows that people who eat at least three apples a day lose weight.
D. Stand up and walk around
Every time you use the mobile phone, stand up and walk around. Heavy people sit on average (平均）two and a half hours more each day than thin people. This skill is very important as standing up and walking around will bum 50 0r more calories.
Use these skills, and you will have a big weight loss.
小題1:We should have soup first so that _______.
A．it can help burn some caloriesB．our stomach will want less
C．it will provide us with enough waterD．we won’t need any main food
小題2:Which of the following may the writer NOT agree?
A．Sitting up slowly without using your hands helps bum calories.
B．Eating apples every day is good for people’s health.
C．You have to join a gym if you want to lose weight.
D．It’s good to walk around while talking on the mobile phone.
小題3:This passage is written to _______.
A．give advice on how to lose weight B．tell people to eat apples every day
C．tell people how to enjoy a better lifeD．tell people to give up bad habits
小題4: In which part of a newspaper would you most probably read the passage?
A．Shopping.B．Teaching.C．Family.D．Health.

查看答案和解析>>

科目：初中英語 來源：不詳 題型：完形填空

The earth(地球)moves(移動)round the sun ,and the  36  moves round the earth. When our part of the earth turns(轉(zhuǎn)) 37  the sun ,it is  38  .When our part of the earth turns  39 from the sun ,it’s Night.
The sun is  40 bigger than the moon. But sometimes the moon looks bigger than the sun , because it is much  41  to the earth.
The sun is very bright. It  42  very strong light. The moon looks quite bright, too, but it doesn’t give  43  light  44 .The light from the moon comes  45 the sun .
小題1:
A．moonB．earthC．sunD．star
小題2:
A．roundB．toC．withD．from
小題3:
A．hotB．coldC．DayD．Night
小題4:
A．outB．a(chǎn)wayC．onD．of
小題5:
A．quite B．a(chǎn) littleC．veryD．much
小題6:
A．nearB．farC．nearerD．farther
小題7:
A．takes B．getsC．bringD．gives
小題8:
A．veryB．a(chǎn)nyC．manyD．some
小題9:
A．moreB．tooC．muchD．a(chǎn)t all
小題10:
A．onB．outC．fromD．of

查看答案和解析>>

科目：初中英語 來源：不詳 題型：閱讀理解

A principal decided to honor the teachers in his school to show his appreciation(感激)for their hard work. He told them how they made a difference in their jobs. Then he gave each of them a blue ribbon(緞帶)that read, “Who I Am Makes a Difference.”
One of the teachers wanted to take this idea into her students. One day the teacher noticed that a boy in her class was unhappy. She went to him and asked him the reason. The boy told her that his father had been worrying about the job and often punished him for some little things. Hearing what he said, the teacher decided to give him the ribbon to cheer him up. She said, “Dear boy, what your father has done doesn’t mean the lack(缺少)of love for you. He needs your understanding. You’ve been a kind boy. Here’s a ribbon for you. Would you like to take this ribbon and pass it on? Let’s keep this ceremony going and find out how it affects people.”
That night the boy sat beside his father and said, “Dad, today my teacher gave me a blue ribbon for being kind and asked me to find somebody else to honor. I’d like to give the ribbon to you. I want to let you know how deeply I admire you and how much you mean to me. I love you!”
根據(jù)短文內(nèi)容判斷正、誤。
（注意：考生將答題卡相應(yīng)位置涂黑。正確的涂“A”，錯誤的涂“B”）
小題1:All the teachers took the principal’s idea into their students.
小題2: The teacher gave the ribbon to the boy because she wanted to cheer him up.
小題3:With the teacher’s help, the boy showed his admiration and love for his father.
小題4: The father wasn’t surprised or moved at all when he received the ribbon from his son.
小題5: From the passage, we know only encouragement brought the father’s confidence back.

查看答案和解析>>

同步練習冊答案