Here are some of the most common causes of fatigue, and what you can do about them.
Inadequate Sleep. If you don’t get enough sleep you’ll be tired but it’s rare that busy people get enough sleep. When there aren’t enough hours in the day to do everything, something has to give, and that’s usually sleep. Don’t fool yourself that you can get by on five or six hours of sleep a night. Most people need at least eight hours and some even more.
Hormone Imbalances. Thyroid disease is extremely common today, especially among young women and the elderly. As common as thyroid disease is, its symptoms are so similar to so many other ailments that it often goes unnoticed by both doctors and patients. If you’re suffering from fatigue, get your thyroid hormone levels checked.
Food Allergies. You may be allergic to common foods like dairy, eggs, nuts, wheat, corn, chocolate, or coffee. If you suffer from coughing or wheezing, digestive problems, headaches, muscle aches or joint pain, itching and skin problems, in addition to fatigue, try cutting out each of these foods for a week to see if you feel better without it. Also, don’t eat excessive amounts of any particular food during any one day.
Environmental Toxins. Fatigue may result from our polluted environment. If, in addition to fatigue, you suffer from headaches, allergies or respiratory problems, you may be absorbing airborne toxins. Check the ventilation system in your home and office. Buy houseplants, air filters, and water filters for your home. If you’re working in a “sick” building you may have to look for another job.
Couch Potato Syndrome. Fifty percent of depression and fatigue can be caused by inactivity. For an energy boost, do anything that gets you moving for 20 to 30 minutes a day.
Anemia. Anemia can be a hidden disease in women. If you’re tired for no known reason, have your total iron count taken. Sometimes, even though your blood count may show a normal level of red blood cells, you may still be deficient in iron. If your iron count is low, you may need supplements.
Cigarette Smoking. Cigarettes are an enormous energy drain. They rob the body’s cells of oxygen and produce carbon monoxide poisoning.
Too Much Coffee. If you drink a lot of coffee in the effort to beat fatigue, in the long run you’ll be even more tired. Coffee gives you a temporary lift at the cost of long-term energy.
Poor Nutrition. The typical American diet, high in refined foods and animal fat, supplies inadequate nutrients and drains energy. Switch to a diet low in animal protein and saturated fat and high in fruits, vegetables, grains and beans. Cut out highly processed foods. Take vitamins.
62. What does the underlined word “fatigue” mean?
A. tiredness        B. weakness         C. sickness          D. laziness
63. Couch potato syndrome has something to do with ______.
A. potato          B. couch            C. energy           D. inactivity
64. According to the passage, you can infer that ______.
A. you can always do with five or six hours of sleep a night.
B. fifty percent of depression and fatigue can be caused by inactivity.
C. it’s easier for women to catch thyroid disease or anemia.
D. the more coffee you drink, the less tired you are.
65. Which of the following is NOT one of the causes of fatigue according to the passage?
A. Polluted environment.          B. Cigarette smoking.           C. Low iron count.
D. A diet low in animal protein and saturated fat and high in fruits, vegetables, grains and beans.

小題1:A
小題2:D
小題3:C
小題4:D
         
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科目：高中英語 來源：不詳 題型：完形填空

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閱讀下列短文，從每題所給的四個(gè)選項(xiàng)(A、B、C和D)中，選出最佳選項(xiàng)。
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Chain Management: Chain damage is still the number one problem with mountain bikes. Keeping your chain clean and well-oiled will help, as will frequent chain replacement. Periodic inspection of your chain for wear, stretch and damage may save you a long walk home.
Packing Tape: This can be used for rims trips, boots for fractured tires and a dozen more makeshift repairs. If you've flown to the race, it also saves you from having to borrow tape to close up your bike box for the flight home. Other musts: safety pins and plastic zip ties.
Pre-race: Visual inspections before any serious off-road ride, carefully examine the area where the tire hooks onto the rim and remove any foreign objects which could cause premature（比預(yù)期早的）tire wear.
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Be Self-Contained: Make sure you are self-contained. Bring your own drinking water, food and first aid kit. Also have tools, spare parts, tubes, quick fills and a chain tool. Never suppose you can just borrow these items from a friend.
Post-race Visual Inspections: Inspect your bike after completing each event, especially before competing in a downhill event. Re-inspect before packing your bike for the trip home.
Have Fun!
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75 The passage is organized in order of _______.
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Ⅲ、完形填空（15分）
From Monday to Friday most people are busy working or studying，but in the evenings and weekends they are free and    31    themselves.Some watch television or go to the movies，others    32    sports.This is decided by their own     33    .
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31. A. love           B. work         C. enjoy         D. play
32. A. look like       B. take care of   C. think about     D. take part in
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36 .A. make         B. making     C. makes         D. made
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38 .A. a little        B. a few       C. a lot           D. a number
39 .A. thousand     B. thousands   C. thousands of   D. thousand of
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41 .A. that          B. if            C. what         D. why
42 .A. to            B. on          C. with          D. in
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44 .A. where        B. how         C. what         D. why
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