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　　Is bottled water better for you than tap? Or should you choose vitamin-enriched water? Experts say, skip it all．None of these products is likely to make you any healthier．Below, we look at four major myths about the benefits of drinking water．　　1　　 Experts say there’s an easy way to judge．If you are not thirsty, your fluid intake is likely “just right”

　　Myth No 1：Drink eight glasses each day．

　　Scientists say there’s no clear health benefit of drinking so much water a day．　　2　　 “Nobody really knows,” says Dr．Stanley Goldfarb, a kidney expert at the University of Pennsylvania．

　　Myth No．2：Lots of water equals healthier skin．

　　The body is already 60 percent water．　　3　　 Adding a few extra glasses of water each day has a limited effect．“It’s such a tiny part of what’s in the body,” says Goldfarb．“ It’s very unlikely that one’s getting any benefit．”

　　Myth No．3：　　4　　

　　A more accurate statement may be：Drinking water is a helpful tool for dieters．“Water is a great strategy for dieters because it has no calories,” says Madeline Fernstrom of the University of Pittsburgh．“So you can keep your mouth busy without food and get a sense of satisfaction．” But water is not magical, she adds．“Other zero-calorie options such as diet sodas are fine, too．”

　　Myth No．4：It’s easy to get dehydrated(脱水的)during a workout．

　　Dehydration sets in when a person has lost 2 percent of his or her body weight．　　5　　 “It’s also obvious that individuals in hot, dry climates have an increased need for water,” says Goldfarb．“But for a walk in the park, no water bottle is necessary．”

A．So where does the standard advice come from?

B．But it’s unclear whether these changes are clinically significant．

C．So for a 200-pound man, this means losing 4 pounds of water．

D．Drinking extra water leads to weight loss．

E．Drink as much water as you can．

F．So, if you take a 200-pound man, he’s 120 pounds of water．

G．But first, how do you know if you’re drinking enough water?

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　　Ahh, the great outdoors! You can’t beat it, can you? Clean air and beautiful countryside are just what you need to help you relax．　　1　　 By camping of course．

　　First of all, where will you camp? There are camping grounds all over China．Do you want to explore lakes, mountains, the forest or the seaside? 　　2　　

　　You will need a tent．Most tents are made of light, brightly-colored material and are easy to put up．They come with a groundsheet, which stops water getting in, as well as a fly screen, so that bugs(虫子)don’t fly into your tent at night．

　　Take a sleeping bag and sleeping mat．　　3　　 Are you going somewhere cold or hot? You can buy sleeping bags of different thickness．

　　Make sure you bring the right clothes．If you want to go hiking, you will need a strong pair of walking boots, some lightweight trousers, and a waterproof coat．A good map and compass are needed too．

　　　　4　　 Make sure you put your camping stove far away from the tent, too close and you might cause a fire．Bring packaged food as you will not have a refrigerator．

　　If you are going to a remote area, pack an “emergency survival kit”(急救箱)．This should contain a survival bag of tough plastic, big enough for you to fit into．Also a whistle, pocket-knife, torch and some emergency food and water．Make sure you always tell someone where you are going．　　5　　 The holiday is coming soon．Why not use the time to go camping．

A．Mind your steps!

B．The choice is yours!

C．Have you got all that?

D．Cooking outside is fun．

E．Always go with your family．

F．What’s the best way to enjoy it?

G．Check the weather!

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　　The Mississippi is a great river whose relationship with man goes way back beyond its discovery in the 16th century．The River Indians used it as a highway and as a source of food, and it was they who gave it its name－“misi”meaning“great”and“sipi”meaning“water”．When the length of its branch, the Missouri, is added to it, the Mississippi becomes greater．　　1　　．From the source of the Missouri to the tip of the delta(三角洲), it is 2, 480 miles long．

　　Great rivers are likely to suffer floods．In 1927 the Mississippi flooded 26 thousand acres, sweeping away farms, towns, everything in its path．In 1938 its floods drowned or killed 200 people and made millions homeless．Today the river has largely been controlled．　　2　　．

　　Industries have spread down some of the waterways of the delta, but otherwise the delta is a remote place, the homeland of a little colony of French Canadians that the British drove out of Nova Scotia in the 18th century．They still speak French, mixed with English, Indian, Spanish and Negro idioms．They keep to themselves, farming the rich soil of the delta．　　3　　．

　　　　4　　．Pioneers who first reached its banks wondered not only where it went, but what lay beyond．In 1764 the French founded a city on the right bank of the river, and named it after their king, Louis XV．This city, named St．Louis, became the jumping-off(起点)place for the adventurous men and women who opened up the Great Plains, and the way to the Far West．

　　Some 40 years earlier, at the beginning of the 18th century, the French had founded another city just above the Mississippi delta, New Orleans．　　5　　．New Orleans is one of the great ports of the world, and one of the greatest terminals for both sea and river traffic．

A．It was the Mississippi that made the city what it is

B．Levees, high banks built of earth, hold back the flood waters

C．Therefore, as we know, it's the third longest river in the world

D．It is known that the“Great Water”has also been a frontier river

E．However, they paddled up and down the Mississippi in their boats to seek their fortune

F．The“Great Water”always remains a threat, for the streets of the city are below the level of the river

G．They call themselves Cajuns, who have actually been leading fairly primitive lives and preserving their own traditions