Spending two or three hours playing outdoors each day can reduce the chance of becoming short-sighted(近视), a research shows. It challenges the belief(信念) that short-sightedness is caused by computer use, watching TV or reading in weak light.
The Australian government researchers believe that the sunlight is good for people’s eyes. They studied the vision(视力) and habits of 100 seven-year-old children in Singapore and Australia. In all, 30% of the Singaporean children were short-sighted—this rate(比率) was ten times higher than Australian children.
Both groups spend a similar amount(数量) of time reading, watching television and playing computer games. However the Singaporean children spent an average (平均) of only half an hour a day outdoors—90 minutes less than the Australian children.
Professor Ian Morgan, from the Australian Research Council’s vision Centre, said, “Humans are naturally long-sighted, but when people begin to go to school and spend little or no time outdoors, the number of short-sighted people gets larger. We’re also seeing more and more short-sighted children in cities all around the world and the main reason may be that city children spend less time outdoors.
Daylight can be hundreds of times brighter than indoor light. But why does playing outside prevent us from becoming short-sighted ? Scientists believe that natural light has a special chemical(化学物质) which stops the eyeball from growing out of shape and prevents people from becoming short-sighted.
So be outdoors. It doesn’t matter if that time is spent having a picnic or having sports.
1.How much time did the Australian children spend outdoors on average according to the research?
A. 30 minutes. B. 60 minutes.
C. 90 minutes D. 120 minutes.
2.Which of the following is TRUE according to the passage?
A. If people spend less time outdoors, they will certainly become short-sighted.
B. There are fewer short-sighted Singaporean Children than Australian children because
they have more knowledge of protecting their eyesight.
C. There will be fewer risks of getting short-sighted if people spend two or three hours a day playing outside.
D. When people begin to go to school, they will become long-sighted.
3.What is the fifth paragraph mainly about?
A. Why natural daylight has a special chemical.
B. Why daylight prevents people from becoming short-sighted.
C. Why daylight is much brighter than indoor light.
D. What the special chemical which can stop eyeballs from growing out of shape is.
Everyone has got two personalities---the one that is shown to the world and the other that is secret and real. You don't show your secret personality when you're awake because you can control yourself, but when you're asleep, your sleeping position shows the real you. At night, of course, you often change your sleeping position. The important position that best shows your secret personality is at the beginning of your sleep.
If you go to sleep on your back, you're a very open person. You often trust people and you are easily influenced by fashion or new ideas. You don't like to make people unhappy, so you never express your real feelings. You're quite shy and you aren't very confident.
If you sleep on your stomach, you are a person who likes to keep secrets. You worry a lot and you're always sad. You don’t want to change your ideas, but you are pleased with your life. You usually live for today not for tomorrow.
If you sleep on curled up(蜷缩), you are probably a very nervous person. You're shy and you don't like meeting people. You prefer to be on your own.
If you sleep on your side, you have usually got a well-balanced personality. You know your strengths and weaknesses. You're usually careful. You have a confident personality. You sometimes feel worried, but you don't often get unhappy. You always say what you think even if it makes people angry.
1.When does the sleeping position best show your secret personality?
A. In the daytime. B. At the beginning of sleep.
C. At night. D. During the deep sleep.
2.Tina hardly tells her secrets to her friends. She probably goes to sleep ___________.
A. on curled up B. on her stomach
C. on her back D. on her side
3.What does the passage tell us?
A. Sleeping on your side is the best way of sleeping.
B. Changing positions will cause sleeping problems.
C. Sleeping positions show people’s secret personalities.
D. Enough sheep makes people look healthier and better.
Why do you think people in some hot countries eat very spicy（辛辣的）food? Is it because the spices make the food taste better? Is it just because their parents and grandparents and great-grandparents liked hot food，or is there any connection(联系) between spices and healthy food?
Scientists think that it is because spice plants have some important chemicals（化学物质）．These chemicals can kill bacteria（细菌）.
“Most common spices can kill 75 to 100 percent of the bacteria in food，”explains one of the scientists．The bacteria grow more easily and spoil（使…变质） food more quickly at higher temperatures．For this reason，it is more difficult to keep food from spoiling in hot climates，
Do you like your food spicy? Your answer probably tells something about the country you are from．If you like spicy food，it is possible that hundreds of years ago，when there were no fridges，people in your country started using spices to keep the food from spoiling．The traditional spicy dishes helped those people to live longer，healthier lives．Today，in a time of fridges，the spices just make the food taste better．
1.The chemicals in spices keep food fresh by_________．
A. making food taste better
B. making food hotter
C. preventing bacteria getting into food
D. killing bacteria in food
2.Food goes bad more quickly in hot climates because_______．
A. cold temperature makes bacteria
B. bacteria get used to hot food
C. high temperature helps bacteria grow faster
D. bacteria spoil food only at high temperature
3.According to the passage，spices are useful in an the following things except_______．
A．helping you to live longer
B. helping to keep you healthier
C．making your food taste better
D. being used as fridges
完形填空 先通读下而的短文，掌握其大意，然后在每小题所给的四个选项中，选出可以填入空白处的最佳选项，并住答题卡上将该项涂黑。
What is your favourite colour? Do you like yellow, orange, or red? If you do, you must be an optimist (乐观者), a leader or an active person who enjoys life. Do you prefer grey and blue? Then you are probably quiet, shy and you often follow instead of . You seem to be a pessimist (悲观者).
Colours our moods, there is no doubt about it. A yellow room makes most people feel more and warmer than a dark green one. It seems that a red dress brings warmth and cheer to the sadness winter day. On the other hand, black represents stress. A black bridge the River Thames, near London, used to be the scene of more suicides (自杀) than bridge in the area until it green. The number of suicides fell at once, perhaps it will fall even more if the bridge is done pink or baby blue. Light and colours make people not only happier but . It is true that factory workers work better, harder, and have accidents when their machines are painted orange rather than or dark green.
1.A. returning B. coming C. leading D. thinking
2.A. cause B. influence C. effect D. create
3.A. cheerful B. unhappy C. nervous D. worried
4.A. on B. over C. across D. through
5.A. painted B. is painted C. paints D. was painted
6.A. with B. by C. in D. to
7.A. dark B. bright C. clear D. good
8.A. active B. much active C. more active D. actively
9.A. little B. less C. fewer D. more
10.A. white B. light C. pink D. black
– Pudong Airport, please. I have to be there by 3:00 pm.
--______________, but I'll do my best.
A. I can't promise anything B. Don’t worry
C. We still have enough time left D. Sorry, I can’t
What________ most is that Japan don’t want to say “sorry” to the Chinese people about the war.
A. proves B. faces C. matters D. admires
