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(释放) 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 prepared. 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 wild
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.
B. Food poisoning means death.
C. Food poisoning comes in varieties.
D. Food poisoning can be serious.
B. are too common to be noted
C. can be noticed within hours
D. can be ignored
B. low temperatures
C. some tiny living things
D. certain natural materials
B. vegetables are safer than meat and seafood
C. natural poisons are more dangerous than chemicals
D. different types of food should be handled differently
B. chemicals are needed in food processing
C. food poisoning can be kept under control
D. food poisoning is out of control
A. Method I
One of the best ways to learn a foreign language is to follow the method you use to learn your first
language. As a child you hear the sounds of your own language and you repeat them. You see the written
form of the language around you and little by little you are taught to link the forms of the language. The
BBC programme uses this method in many different ways.
B. Method Ⅱ
With explanations in 37 languages as well as completely in English, these are broadcast to most areas of the world from London and by some 300 overseas radio stations in more than 100 countries.
C. Method III
These audio courses are for people who wish to learn English at home or in the classroom. Although
women belong to the radio series, they can all be used for studying English from beginners" level to
advanced.
D. Method Ⅳ
BBC English programmes have been broadcast successfully on television in more than 100 countries.
They can also be got on video, with supporting textbooks and audio cassettes, they form complete courses for home study or teaching.
E .Method V
The BBC English magazine is a bi-monthly publication and is a companion to BBC English radio broadcasts. It is written by the programme makers and includes programme details, practical home study
exercises and features, as well as items of general interest from BBC programmes dealing with science,
medicine, technology, etc.
F. Method Ⅵ
This popular course for learners and teachers of English is held in London every summer. For
information on any of the above please write to:
BBC English, PO Box 76, Bush House, London WC2B4PH1
In London personal callers can see BBC English courses on display at the BBC World Shop, Bush
House, London WC2B4PH.
2. Huang Hai is learning English through the BBC English radio broadcasts. She needs some practical home study exercise books.
3. Zhong Lu needs a set of textbooks and audio cassettes so as to learn the BBC English to advanced.
4. Zhang Ming has no time to listen to the BBC English programmes, but she wants to buy the video courses for her home study.
5. Professor Liang Xing wants to learn something about English language in summer school so as to go there to improve his English in summer holidays
who are quizzed about their child"s physical activity level describe their children as fairly active.But a
new study of nearly 2,000 British school children suggests that many parents overestimate the amount
of physical activity their children are really getting.
The researchers equipped 1,892 British school children, ages 9 and 10, with accelerometers that
measure all physical activity during a given time period.The research, known as the Speedy study
collected the exercise data from children at 92 schools in Norfolk, England, between April and July
2007.
A child was regarded inactive if he or she recorded less than an hour a day of physical activity.
Although the majority of children studied were getting enough physical activity, a_sizable_minority_of_
children_were_not.Overall,39 percent of girls and 18 percent of boys studied were getting less than
an hour of physical activity each day.
But if you asked the parents of the inactive children to describe their child"s activity level, the vast
majority-80 percent-described their children as fairly or very physically active, according to the findings
published in the American Journal of Preventive Medicine.Interestingly, the children themselves had
more awareness about their lack of physical activity.Overall,40 percent of children overestimated their
physical activity.
But it wasn"t the parents of overweight children who were most likely to guess wrong about physical
activity levels.The parents who were most out of touch about their child"s physical fitness were more
likely to have children who were slim.Parents of girls were also more likely to overestimate physical
activity.The researchers noted that parents should be educated about the importance of physical activity
for children even if the child is not overweight.
"Parents of slim children appear to assume that their children are adequately active, " the study
authors reported."Increasing awareness regarding health benefits of physical activity beyond weight
control might help have a correct idea of physical activity levels and encourage behavior change."
B. Children with less than an hour a day of physical activity.
C. Overweight children.
D. Children out of touch with their parents for a long time.
B. Only a small number of children were not getting enough physical activity.
C. A small number of children didn"t overestimate their physical activity.
D. The minority of children were not studied at all.
B. persuade parents to keep an eye on their children"s weight
C. urge children to wear accelerometers during exercise
D. advise parents to keep in touch with their children
hearing memory has been greatly improved, he"ll be able to use and remember what he listens
to in class. The success of these suggestions depends upon your ability to use your child"s
natural desire to get involved in games he finds simple and fun.
A good way to begin is to read aloud a sentence from a book suitable for your child"s
reading age. Then ask your youngster to repeat the sentence back to you correctly. Next,
reread the sentence, leaving out a particular word. See if your child can identify the word
you left out. At the beginning use only simple sentences. Gradually, increase the length of the
sentences. Make sure you don"t rush things along too quickly, or your child may become
discouraged and tired of the game.
Take your child shopping with you often. He"s to remember a list of items you want to buy
in the supermarket. First , ask him to remember only a few things. Then, as he shows increased
ability to remember, make the list longer and longer. Praise him often and warmly when he
shows increased ability to remember things. He"ll become proud of his "good" memory and
will happily play the game.
Encourage your child to learn easy and short poems. As his ability to do this becomes
stronger, encourage him to remember longer poems. Do the same with songs.
B. you can stimulate(激发)your child"s interest in the activity
C. you force your child to get involved in more practice
D. you improve your own hearing memory first
B. to develop his reading skills
C. to help him remember what he hears
D. to play a simple game he may find fun
B. how you should take you child shopping with you
C. how to remember the items you want to buy
D. the way you help your child do shopping
and remember _____.
B. poems in the same way as he does with songs
C. the poems and songs which are similar in meaning
D. those songs that have the same meaning as poems
B. Parents.
C. Teachers.
D. Psychologists
The idea for a science experiment can come from an unusual place.After watching a YouTube
video of a dancing bird named Snowball, a scientist in California decided to study the ability of
animals to keep the beat.
Bird lovers have long claimed that their pets have rhythm, and there are many videos of dancing
birds online.Until now, scientists have suspected that humans are the only animals that can accurately
keep rhythm with music.
Thanks to Snowball, that_scientific_opinion is changing.Snowball is a cockatoo, a kind of parrot,
and his favorite song is "Everybody" by the Backstreet Boys.When he hears the song, he moves his
feet and rocks his body with the tempo, or pace of the music, as though he is the only bird member
of the boy band.
Aniruddh Patel is a neuroscientist, or a scientist who studies how the brain and the nervous system
contribute to learning, seeing and other mental abilities.He works at the Neurosciences Institute in San
Diego.After seeing Snowball" s dance online, Patel visited the cockatoo at the bird rescue facility he"s
called home for two years.The scientist played "Everybody" for Snowball and also played versions of
the song that were sped up or slowed down.Sometimes, Snowball danced too fast or too slowly.
Often, when there was a change in tempo, Snowball adjusted his dancing to match the rhythm.In other
experiments, scientists have observed the same abilities in preschool children.
Patel isn"t the only scientist who has studied Snowball"s moves.Adena Schachner, who studies
psychology at Harvard University, also wanted to know more about the dancing bird.Schachner"s
team played different musical pieces for Snowball and a parrot named Alex, as well as eight human
volunteers.The scientists observed that the birds and the humans kept time to the music with about
the same accuracy.
Schachner and her team watched thousands of YouTube videos of different animals moving to
music.Not all the animals could dance, however.From watching the videos, the scientists observed
that only animals that imitate sounds, including 14 parrot species and Asian elephants, accurately
moved in time to music.
B. humans are the only animals that can accurately keep rhythm with music
C. the brain and the nervous system contribute to some mental abilities
D. bird pets can have their special rhythm under human"s instruction
B. Snowball is able to adjust his dancing to match the rhythm.
C. Snowball cannot dance to the versions of the song Everybody.
D. it is the brain and the nervous system that control the mental abilities.
B. humans" musical sense
C. the same abilities in children
D. videos of dancing birds
you do, you must be in control of your time. Your success in high school depends on your use
of time. Here are some important things to remember.
* Begin each term by filling in a master plan. First fill in things you must do (classes, work,
practice, etc. That you can"t change). Then find the most effective use for these times.
* Set a regular time and place for study. This will save you time in the long run. If you have
a study hall in your school, use it!
* Use daylight hours to study whenever possible. For most people for every hour of study
done in daylight hours, it will take them one and a half hours to do the same task at night.
*Take breaks. Don"t plan marathon study time. Have a short rest before you study again.
*By using flash cards or summary sheets, you can use odd times to study-----while you"re
waiting for class to start or for a friend to pick you up.
* If possible, plan study time with a partner. Choose your partner wisely however. Make
sure you study, not socialize yourself.
* Do the most difficult tasks when you are active. (Take math for example: when you"re
energetic, it will become easier to solve; when you"re tired, it will be impossible ! )
*Make a daily checklist. Do the most important tasks first.
B. your hard work
C. your brain power
D. how well you play the game
B. most people can spare more time to study in the daytime
C. it"s more difficult to study effectively at night
D. we have more important things to do than study at night
B. keeping a good balance between study and rest
C. putting the most important tasks first
D. trying to study alone instead of working with others
B. irregular
C. busy
D. divided
B. college students
C. teachers
D. high school students
- 1There is very little _____ in _____ him to study hard. It wo
- 2△ABC中,∠A的正弦记作 [ ]A.sinAB.cosAC.tanAD.cotA
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- 5求证:
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- 7My parents tried their best to laugh my fears for
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- 9阅读下面的文言文,完成后面题目。(19分)谤誉柳宗元凡人之获谤誉于人者,亦各有道。君子在下位则多谤,在上位则多誉;小人在
- 10下列说法正确的是( )A.4的平方根是2B.将点(-2,-3)向右平移5个单位长度到点(-2,2)C.38是无理数D.
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- 2如图,△ABC中,点D、E分别在AB、BC边上,DE∥AC,∠B=50°,∠C=70°,那么∠1的度数是( )A.70
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- 4化简:2(x-3x2+1)-3(2x2-x-2)
- 5下列划线的成语、熟语运用正确的一项是:[ ]A、厂家在推销自己产品时,要善于借势,学会拉大旗,作虎皮,为自己服务
- 6在水池的一角有一块平面镜,现有一束光线从水中射向平面镜,如图,请完成光路图,并标出反射角(用“α”表示)和折射角(用“β
- 7已知Cl可溶于水,并发生如下反应:Cl+HOHCl+HClO。对此,下列说法错误的是( )A.该反应是氧化还原反应B.氯
- 8定义在上的奇函数满足,,且当时,有,则的值为( )A.B.C.D.
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