The weather is getting hotter. You are thirsty playing basketball or riding home from school. A cold drink may be just the thing. But be careful what you are drinking. Something that looks cool may not be good for your health.
There are plenty of "energy drinks" on the market. Most of them have beautiful colors and cool names. The lists on them tell you they are helpful to your health. Sounds great!
But after a careful check you may find that most energy drinks have lots of caffeine (咖啡因) in them. These drinks are especially aimed at young people, students, busy people and sports players. Makers sometimes say their drinks make you better at sports and can keep you awake. But be careful not to drink too much.
Caffeine makes your heart（心脏）beat fast. Because of this, the International Olympic Committee has limited(限制) its use. Caffeine in most energy drinks is at least as strong as that in a cup of coffee or tea. Possible health dangers have something to do with energy drinks. Just one box of energy drink can make you nervous, have difficulty sleeping and can even cause heart problems. Scientists say that teenagers should be discouraged from taking drinks with a lot of caffeine in them.
1.The main reason for people not to drink too much energy drinks is that they may cause .
A．heart problems B．nervousness
C．sleeping difficulty D．possible health dangers
2.The underlined word "discouraged" can be replaced(替换) with "________".
A．encouraged B．stopped C．helped D．disliked
3.From the passage we can know that _________.
A．advertisements are important in getting people to buy energy drinks
B．energy drinks are helpful to teenagers' study
C．sports players need to drink a lot of energy drinks
D．energy drinks are especially aimed at teenagers
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Improve Sleep Good health needs good sleep. Going to bed before you're tired. Not eating or reading in bed. Go to bed at the same time before midnight and get up at the same time. Your body likes routine for a good night's sleep. |
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Stay away from the Flu Studies show that a cold or flu virus can live on our hands for a long time. So wash all parts of your hands often with soap and water. For more ways to prevent the spread of the flu, please call Health Line at 1800-848-1313. |
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Oral Health Brush your teeth twice a day and visit the dentist at least once a year. The mouth is a mirror of disease. The oral examination is not only for the health of teeth, but the whole body. For more of it, please visit www.mydr.com.au. |
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Fit for Life Studies have shown that many diseases have something to do with less or no physical activity. Try to do it for 30 minutes a day, 5 days or more a week. For more information, please call Health Line at 1800-438-2000. |
1.If you want to get a good sleep, you'd better _______.
A．go to bed after you're tried B．go to sleep at midnight
C．follow the bedtime routine D．eat something or read in bed
2.You should visit the dentist at least once a year because_______.
A．the oral examination is necessary B．you don't often brush your teeth
C．some diseases may be in the mirror D．you don't have a good night's sleep
3.Studies have shown that many diseases have something to do with_______.
A．having no oral examination B．washing hands with cold water
C．sleeping too late sometimes D．doing little physical activity
4.When you want to learn more about the flu, you can_______.
A．visit www.mydr.com.au B．call Health Line at 1800-848-1313
C．visit the dentist in your place D．call Health Line at 1800-438-2000
Do you know why different animals or pests(害虫) have their special colors? Colors in them seem to be mainly used to 1 themselves.
Some birds like eating locusts(蝗虫), but birds cannot 2 catch them. Why? It is because locusts change their 3 with the change of the colors of crops. When crops are green, locusts look 4 . But as the harvest time comes, locusts change into the same brown color 5 crops have. Some other pests whose colors are 6 plants are easily found and eaten by 7 . So they have to hide themselves for lives and appear only 8 .
If you 9 animals’ life, you’ll find the main use of colors is to protect 10 . Bears, lions and other animals 11 quietly through forests. They cannot be easily seen by hunters 12 their colors are much like the trees.
Colors are useful not only on the land, but also in the 13 . A kind of fish can 14 a kind of black liquid(液体) when they face danger. The liquid spreads over quickly, so they cannot be found by their enemies and can quickly swim away. That is 15 they can live safely though they are not strong at all. So colors are really useful to animals.
1. A．show B．protect C．kill D．interest
2. A．easily B．freely C．safely D．differently
3. A．sizes B．smells C．colors D．shapes
4. A．yellow B．red C．black D．green
5. A．so B．as C．like D．with
6. A．different from B．same as C．similar to D．opposite with
7. A．other B．others C．the others D．another
8. A．in the morning B．at noon C．at night D．in the daytime
9. A．study B．write C．draw D．work
10. A．them B．themselves C．it D．itself
11. A．run B．fight C．move D．eat
12. A．because B．so C．and D．although
13. A．forests B．desert C．sea D．mountains
14. A．keep out B．come out C．look out D．give out
15. A．why B．when C．how D．where
— Would you mind my using your car?
— . Here is the key.
A．Of course B．Not at all C．Certainly D．Sorry
The flower smells ________ and I like it very much.
A．well B．good C．bad D．badly
—When will Han Han’s new book ________?
—Sorry, I don't know. I’m looking forward to his new book, too.
A．come out B．come on C．come in D．come over
