1 Our bodies are estimated to be about 60%
to 70% water. Blood is mostly water, and our muscles, lungs, and brain all
contain a lot of water. Water is needed to regulate body temperature and to
provide the means for nutrients (滋养物) to travel to all our organs. Water also
transports oxygen to our cells, removes waste, and protects our joints and
organs. 2 We lose water through urination (排尿), respiration
(呼吸), and by sweating. If you are very active, you lose more water than if you
do not take much exercise. Symptoms of mild dehydration (脱水) include chronic
pains in joints and muscles, lower back pain, headaches, and constipation (便秘).
A strong smell to your urine, along with a yellow color indicates that you are
not getting enough water. Thirst is an obvious sign of dehydration and in fact,
you need water long before you feel thirsty. 3 A good rule of
thumb (好的做法) is to take your body weight in pounds and divide that number in
half. That gives you the number of ounces (盎司) of water per day that you need.
For example, if you weigh 160 pounds, you should drink at least 80 ounces of
water per day. If you exercise you should drink another 8-ounce glass of water
for every 20 minutes you are active. If you drink coffee or alcohol, you should
add at least an equal amount of water. When you are traveling on an airplane, it
is good to have 8 ounces of water for every hour you are on board the
plane. 4 It may be difficult to drink enough water on a busy
day. Be sure you have water handy at all times by keeping a bottle for water
with you when you are working, traveling, or exercising. If you get bored with
plain water, add a bit of lemon for a touch of flavor. There are some brands of
flavored water available, but some of them have sugar or artificial sweeteners
that you don't need.
填空题
A. Ounces of water needed per day
B. Importance of water
C. Composition of water
D. Signs of dehydration
E. Supply of water
F. Necessity for bringing a bottle for water
Paragraph 1 ______
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Paragraph 2 ______
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Paragraph 3 ______
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Paragraph 4 ______
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A. in your body
B. without water
C. before long
D. for a change
E. on a busy day
F. to your weight
One cannot live ______.
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Dehydration may occur if there is a shortage of water ______.
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The amount of water your body needs per day is related ______.
填空题
Don't forget to drink enough water even ______.