Food sometimes gets poisoned with harmful things. A person who eats such food can get an illness called food poisoning. Food poisoning is usually not serious, but some types are deadly, The symptoms of food poisoning usually begin within hours of eating the poisoned food. Fever is one of the most common symptoms.
Certain microorganisms (微生物) cause most types of food poisoning. Bacteria and other microorganisms can poison eggs, meat, vegetables, and many other foods. After entering the body, these tiny living things release (釋放) poisons that make people sick.
Some chemicals can also cause food poisoning. They are often added to food while it is being grown, processed, or prepaid. For example, many farmers spray chemicals on crops to kill weeds and insects. Some people may have a bad reaction to those chemicals when they eat the crops.
Some plants and animals contain natural poisons that are harmful to people. These include certain kinds of seafood, grains, nuts, seeds, beans, and mushrooms.
When people handle food properly, the risk of food poisoning is very small Microorganisms multiply rapidly in dirty places and in warm temperatures. This means that people should never touch food with dirty hands or put food on unwashed surfaces. Food should be kept in a refrigerator to stop microorganisms from growing. Meat needs to be cooked thoroughly to kill any dangerous microorganisms. People should also wash food covered with chemicals before eating it. Finally, people should not eat raid mushrooms or other foods that grow in the wild. Some of these foods may contain natural materials that are poisonous to humans. In addition, some types of fish can be poisonous.
Most people recover from food poisoning after a few days of resting and drinking extra water. If people eat natural poisons, they must go to the hospital right away to have their stomachs emptied.
小題1:Which of the following statements is NOT true?
A．Food when poisoned can make people sick.
B．Food poisoning means death.
C．Food poisoning comes in varieties.
D．Food poisoning can be serious.
小題2: We know from the passage that the symptoms of food poisoning       .
A．a(chǎn)re always accompanied by a fever
B．a(chǎn)re too common to be noted
C．can be noticed within hours
D．can be ignored
小題3:Food poisoning can be caused by all the following EXCEPT     .
A．some chemicalsB．low temperatures
C．some tiny living thingsD．certain natural materials
小題4:It can be inferred from the passage that
A．natural materials are safe in food processing
B．chemicals are needed in food processing
C．food poisoning can be kept under control
D．food poisoning is out of control

小題1:B
小題1:A
小題1:B
小題1:C      
小題1:B考查細節(jié)分析。由第一段中 “Food poisoning is usually not serious, but some types are deadly.”可知。
小題1:A考查學生細節(jié)分析能力。由第一段最后兩句話可知。
小題1:B考查事實細節(jié)分析理解。由第五段Food should be kept in a refrigerator to stop microorganisms from gnawing.可知low temperatures不能導致Food poisoning。
小題1:C考查推測能力。由文中第五段第一句話可推測出C正確。
練習冊系列答案
相關(guān)習題

科目：高中英語 來源：不詳 題型：閱讀理解


Many cities in the world are benefiting from the night activities of a group of people who call themselves guerrilla (游擊隊) gardeners. Armed with trowels, spades and a van full of flowers and plants, guerrilla gardeners turn abandoned urban land into a blaze of color. In city centre locations where there was mud, weeds and empty plastic bottles, residents often wake up to find that the wasted area has been transformed overnight with brightly-colored bedding plants.
In most British cities, local governments and police turn a blind eye to the effort of the gardeners, whose activities are always carried out under cover of nightfall. And so far, there has been nothing but praise from the astonished and delighted local residents when they find their neighborhood transformed in such a striking fashion.
Not only do the guerrilla gardeners beautify neglected places, they also return regularly to water the plants and weed the flower beds. They also make sure that at least some of the plants they bring are evergreens, which means that the area doesn’t look depressing in the winter months.
The first guerrilla gardener in London was Richard Reynolds, whose day job is at an advertising agency. Mr. Reynolds, a graduate of Oxford University, began his efforts two years ago when he moved to a flat in a tower block in South London. From his balcony, he could see several empty concrete pots, placed by the local governments to contain plants but never used. He went out after midnight and filled the pots with plants, and then planted more flowers in the path leading to the entrance to the block.
He then set up a website to explain his plan and called upon more gardeners to join him. Cash donations flooded in and, more importantly, volunteers rushed to be part of the campaign. Within six months, there were five hundred people in London prepared to come out at very short notice to restore neglected parts of the urban landscape. There are now unofficial but carefully-organized groups in many cities in Britain and North America and there is also a website where would-be urban gardeners can find out the location of the next expedition.
小題1:These guerrilla gardeners do their work ______.
A．a(chǎn)t the request of the government
B．nearby their house
C．often in return for others’ help
D．out of their own free will
小題2:Richard Reynolds decided to fill the pots with plants in order to ______.
A．plant more flowers in the path
B．beautify the neighborhood
C．a(chǎn)ttract attention for his ad agency
D．make the plants a feast for his eyes
小題3:The guerrilla gardeners often return to their night working places with the purpose of ______.
A．looking after these plants
B．enjoying these beautiful flowers
C．helping plants live through winter months
D．changing the varieties of the plants
小題4:It can be inferred from the text that these guerrilla gardeners ______.
A．a(chǎn)re mainly from the United Kingdom
B．will later get well paid
C．a(chǎn)re still not accepted by the local government
D．become more and more organized

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

All plant cells are capable of taking up（吸收）water. Even dead ones do to a certain degree. Absorption（吸收）of water by dead cell walls makes wood become larger.
In common land plants, the living cells of roots take upmost of the water. Land plants without roots do exist, however. Those greenish-yellow lichens（苔蘚）you see on rocks in the high mountains have no roots. Half a billion years ago, when water plants started to enter the land, the first land plants did not have roots.
Even among the flowering plants, one finds rootless forms. These flowering plants are “the higher plants” because they evolved（進化）recently and are thus considered higher on the evolutionary scale（進化度）.
In the Peruvian desert, there grows one of these rootless higher plants, a bromeliad. It is a relative of the pineapple. Even if this plant had roots, they would be of no use, because where the plant grows, it never rains. The plant gets its water only from the dew（露水）it collects at night, when its leaves cool off. Such rootless plants, of course, can be moved with ease, but they will only grow when they are placed out in the open. If they are placed too near a house, the radiation from the heat of the house prevents the leaves from cooling and so prevents dew from forming, and the plant dies.
In the southern United States and in Puerto Rico, one sees bromeliads growing high above the streets on the insulation（絕緣物）of electric wires. These plants get their water from rain, and the only soil they ever come in contact with is the dust that may blow on their leaves.
小題1:Wood becomes larger because of       .
A．dead cell wallsB．water entering dead cells
C．the growth of cellsD．the death of cells
小題2:From the passage we know that the evolutionary scale is graded according to      .
A．evolutionary cyclesB．heights and depths
C．timeD．kinds
小題3:The “bromeliad” is a plant that     .
A．has no rootsB．is a pineapple
C．can grow anywhereD．takes up water through its leaves
小題4:The most suitable title for this passage is “      ”.
A．Absorption of water by plantsB．Rootless plants in America
C．Plants in the desertD．Higher plants

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Parents often believe that they have a good relationship（關(guān)系）with their teenagers. But last summer, Joanna and Henry noticed a change in their older son: suddenly he seemed to be talking more to his friends than to his parents. “The door to his room is always shut,” Joanna noted.
Tina and Mark noticed similar changed in their 14-year-old daughter. “She used to cuddle up (蜷伏) with me on the sofa and talk,” said Mark. “Now we joke that she does this only when she wants something. Sometimes she wants to be treated like a little girl and sometimes like a young lady.”
Before age 11, children like to tell their parents what’s on their minds. “In fact, parents are first on the list,” said Michael Riera, author of Uncommon Sense for Parents with Teenagers. “This completely changes during the teen years,” Riera explained. “They talk to their friends first, then maybe their teachers, and their parents last.”
Parents who know what’s going on in their teenagers’ lives are in the best position to help them. To break down the wall of silence, parents should create chances to understand what their children want to say, and try to find ways to talk and write to them. And they must give their children a mental break(休息), for children also need freedom, though young. Another thing parents should remember is that to be a friend, not a manager, with their children is a better way to know them.
小題1:“The door to his room is always shut” suggests that the son ______.
A．is always busy with his studiesB．doesn’t want to be disturbed
C．keeps himself away from his parentsD．begins to dislike his parents
小題2: What troubles Tina and Mark most is that _____.
their daughter isn’t as lovely as before  
they can’t read their daughter’s mind exactly
they don’t know what to say to their daughter
their daughter talks with them only when she needs help
小題3: Which of the following best explains “the wall of silence” in the last paragraph?
A． Teenagers talk a lot with their friends
B． Teenagers do not want to understand their parents.
C． Teenagers do not talk much with their parents
D． Teenagers talk little about their own lives
小題4:What can be learned from the passage?
A.  Parents are unhappy with their growing children.
Parents have suitable ways to talk with their teenagers
C.   Parents should be patient with their silent teenagers.
D.   Parents should try to understand their teenagers.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

?New York State has passed the USA’s first state law banning motorists talking on hand-held cell phones. The ban will begin November 1st, although drivers caught using hand-held cell phones will be given only warnings during the first month. 
First-time violators（違法者）will face a ＄100 fine. A second time call for a ＄200 fine and every violation after that will cost＄500. 
At least a dozen localities（地方）have established bans, starting in 1999; and 40 states have had bans proposed but not passed. At least 23 countries, including the Great Britain, Italy, Israel and Japan, ban drivers from using hand-held cell phones. 
There are about 115 million cell phones in use in the United States and more than 6 million in New York State. 
“To think that I’m not going to use cell phone when at the same time I can still use my laptop(膝上電腦), I still can read a paper, I can still change my trousers while driving 65 mph. I think there’s just something wrong,” an official said. 
Other critics noted that other things like eating, drinking coffee and applying make up while driving caused at least as much of a concern. They suggested that the ban include a broader range of things. 
小題1: How much fine will a hand-held cell phone user receive if he has been caught using it four times while driving after November？
A．＄500.B．＄1000.C．＄1200.D．＄1300.
小題2:. We can see from this passage that ____. 
A．the ban has been put into effect in most states in the U. S.
B．many of the developed countries forbid drivers using hand-held cell phones
C．over fifty localities or states ban drivers from using hand-held cell phones
D．more people in the U. S. are against the ban than for it
小題3:The official mentioned in this passage ____. 
A．does not agree with this ban
B．doesn’t believe using hand-held cell phones while driving will cause any danger
C．doesn’t understand why hand-held cell phones alone should be banned among many others
D．believes changing pants while driving will cause greater danger
小題4:The writer intends to tell us in the last paragraph that ______. 
A．it is not fair to have this ban passed
B．the ban will never be passed in the whole country
C．more activities of the same kind should also be banned
D．the ban will meet with more criticism

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

In our life, we have rarely expressed our gratitude to the one who’d lived those years with us.In fact, we don’t have to wait for anniversaries to thank the ones close to us—the ones so easily overlooked. If I have learned anything about giving thanks, it is this: give it now！While your feeling of appreciation is alive and sincere, act on it. Saying thanks is such an easy way to add to the world’s happiness.
Saying thanks not only brightens someone else’s world, but it also brightens yours. If you’re feeling left out, unloved or unappreciated, try reaching out to others. It may be just the medicine you need.
Of course, there are times when you can’t express gratitude immediately. In that case don’t let embarrassment sink you into silence—speak up the first time you have the chance.
Once a young minister, Mark Brian, was sent to a remote parish of Kwakiutl Indians in British Columbia. He had been told that the Indians did not have a word for thank you. But Brian soon found that these people had exceptional generosity. Instead of saying thanks, it is their custom to return every favor with a favor of their own, and every kindness with an equal or superior kindness. They do their thanks.
I wonder if we had no words in our vocabulary for thank you, would we do a better job of communicating our gratitude? Would we be more responsive, more sensitive and more caring?
Thankfulness sets in motion a chain of reaction that transforms people all around us—including ourselves, for no one ever misunderstands the melody of a grateful heart.
小題1:In the first paragraph the writer mainly encourages us       .
A．to express our sincere thanks timely to those around us
B．never to overlook our close friends in daily life
C．to wait for a proper occasion to show our gratitude
D．to increase the world’s happiness by saying thanks
小題2:When we say something for what others do for us, it ______.
A．is good for both us and people who help us
B．benefits the people who do something for us
C．wastes our and our friends’ time at the same time
D．does harm to both us and people who help us
小題3:According to the writer,        could be the best way to prevent ourselves from being left out.
A．seeing a doctor to find the right medicine we need
B．expressing our gratitude in an easy way
C．speaking up the moment we have the chance
D．showing others actively we are willing to help them
小題4:Mark Brain’s story is mentioned in the passage in order to show the fact that       .
A．the Indians didn’t have any words for appreciation
B．the Indians were particularly generous to others
C．some people may express their gratitude through different approaches
D．Mark Brain set the Indians an example to show saying thanks is very important

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Once upon a time in a land far away, there was a wonderful old man who loved everything：animals, spiders, insects．．．
One day while walking through the woods, the nice old man found a cocoon（繭）of a butterfly．He took it home．A few days later, a small opening appeared; he sat and watched the butterfly for several hours as it struggled to force its body through that little hole．Then it seemed to stop making any progress．It appeared as if it had gotten as far as it could and it could go no farther．Then the man decided to help the butterfly, so he took a pair of scissors and cut off the remaining bit of the cocoon．
The butterfly then appeared easily．
But it had a swollen body and small, fragile wings．The man continued to watch the butterfly because he expected that, at any moment, the wings would enlarge and expand to be able to support the body, which would be smaller in time．Neither happened! In fact, the butterfly spent the rest of its life crawling （慢慢爬行）around with a swollen body and fragile wings．
It never was able to fly．
What the man in his kindness and hurry did not understand was that the limited cocoon and the struggle required for the butterfly to get through the tiny opening were Nature’s way of forcing fluid （液體）from the body of the butterfly into its wings so that it would be ready for flight once it achieved its freedom from the cocoon．
Sometimes struggles are exactly what we need in our life．If we were allowed to go through our life without any obstacles and difficulties, it would disable us．We would not be as strong as what we could have been．And we could never fly．
小題1:The butterfly could never fly because ________．
A．it was too fat and strong．
B．it loved crawling around．
C．it got out of the cocoon easily．
D．it didn’t get through the cocoon ．
小題2:The text is most likely to be found in a book about__________．
A．popular scienceB．humorous stories．
C．successful peopleD．philosophy events ．
小題3:What is the implied meaning of the passage?
A．Life without any obstacles and difficulties is perfect．
B．Obstacles and difficulties contribute to success．
C．Never help a butterfly to get out of the cocoon．
D．A butterfly can never fly without going through the cocoon．

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

I read a letter of a mother of a gifted child to an expert with gifted children stating that her son was always complaining that he doesn’t like his teacher for she talks in baby language and she lets them sing baby songs. Having an insufficient（不足夠的） understanding of being different from their normally developing classmates, gifted children may find themselves wanting to learn more than being boxed with other kids of their age. They want to quench（解渴） their thirst for knowledge. However, in the process, they tend to develop negative（負面的） thoughts about school and teachers. Thus, they tend to exhibit behavioral problems.
Behavioral problems of gifted children could be mainly correlated（相關(guān)的） to their asynchronous（不同步的） development. This development means that the child has uneven（不均衡的） development in their mind, body and emotions. To explain further, a gifted child may live in different ages at once. He may show high intellectual（智力的） capabilities at some point but the time his emotions rule, he would go back to his true age going through tantrums（脾氣發(fā)作） and endless sobbing（哭泣）. He maybe find it happy playing with kids his age but the next day, he would be bored with that and he would find conversing with older kids to be more challenging.
Because of high intellectual level, a gifted child often acts differently in his own classroom. He has the thinking of being above from the rest of his classmates when it comes to grades, academic awards and school recognitions. In classroom discussions, the child may be very cooperative（合作的） having advanced knowledge in the lessons but it is mostly that he will suffer from boredom as he is not challenged by the lessons and he would feel no improvement with them.
小題1:Which of the following best explains the asynchronous development?
A A child has good development both in mind and body.
B A child cannot get along well with his classmates.
C A child is intellectually developed but not equal with emotionally.
D A child doesn’t feel happy with his school and teachers.
小題2:What is most likely to be talked about in the paragraph following the passage?
A How a gifted child gets along with his classmates.
B How to get a gifted child involved（被卷入） in a classroom discussion.
C What can arouse（激發(fā)） a gifted child’s interest.
D How a teacher should handle a gifted child in class.
小題3:We can infer from the passage that ______.
A we needn’t pay special attention to gifted children
B a gifted child is well above others in every way
C it’s best to teach a gifted child separately
D teaching a gifted child can be challenging

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空

Last night, when I was driving back home, I noticed a hitchhiker(搭便車的人) who was having no luck getting a ride. I rolled down my__ 21  and signed to the man to my car. I asked him where he was   22   and he told me he needed a    23   to his doctor’s office which would close in 15 minutes. I told him to   24   and he gratefully did so.
25   he got in he told me that he was a   26   and went out to sea for weeks at a time. He took medicine for his nerves and  27   to get another prescription(處方) before he left on the boat. He said that he had prayed (祈禱) 28   would stop for him so he could be there before the   29   office closed. With some 30   driving we managed to make it there in about 10   31 . I then asked him how he   32   on getting back home and he said he could walk. “I’ll patiently 33   for you and bring you back,” I told him. He 34   me and said he should only be about 15 minutes.
Afterwards he got back in my   35  and tried his hardest to pay me back: offering me dinner, gas money, even offering to ship me 40 lbs of scallops (海扇貝)! I  36  refused, gave him a smile card and asked him to help someone else the next time he had a  37 . I drove him back to where I had picked him up and  38   one more “thank you” he was on his way.
I feel that the world  39  offers us what we need. In the man’s  40   it was a ride, in mine the chance to help someone else.
小題1:
A．neverB．a(chǎn)lwaysC．sometimesD．seldom
小題2:
A．opinionB．wayC．caseD．condition

查看答案和解析>>

同步練習冊答案