Intense physical exercise is not the only way to better health. Studies show that walking several times a week can lower risk of many diseases. They include heart disease, stroke, diabetes, bone loss, arthritis (关节炎), and depression. Walking also can help you lose weight.
Fast walking is good for the heart. It lowers the blood pressure. It raises the amount of good cholesterol（胆固醇）in the blood. Researchers say walking can sharply reduce the risk of suffering a heart attack.
Studies have also shown that walking for 30 minutes a day can delay and possibly prevent the development of diabetes. People who are overweight have an especially high risk to develop this disease.
Walking strengthens the muscles and builds up the bones that they are attached to. Studies show that walking could decrease the risk of developing osteoporosis （骨质疏松症）. Walking can also help ease the pain of arthritis in areas where bones are joined. This is because walking strengthens the muscles around the bones.
Experts say walking is one of the safest ways to exercise. There is a low risk of injuries. So it is good for people who are starting an exercise program for the first time and for older people.
A walking program is easy to start. You should wear loose clothes and good shoes. There are shoes that are designed especially for lots of walking.
How fast should you walk? For the best effect, doctors say you should walk fast enough to cause you to breathe hard. Yet you should still be able to talk. Let your arms move freely while you walk.
There are no rules to starting a walking program. You might walk short distances. Or you might walk up hills to strengthen your leg muscles. Health experts say you can gain the most from a walking program if you walk at about five kilogmeters an hour for 30 minutes a day. You should do this about five times a week.
| Walking to ( |
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| ( |
Superiorities to other exercises |
Tips to walkers |
| Reducing the risk of a heart attack ( Raising good cholesterol |
Being ( |
Wear loose clothes and good shoes |
| Walk fast enough to cause you to breathe with ( |
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| Controlling the development of diabetes Help you lose weight |
Walk with your arms move ( |
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| Decreasing the risk of osteoporosis and arthritis Strengthening the muscles ( |
Being easy to start ( |
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| Lowering the risk of other diseases, such as stroke, depression and etc. |
We may be very 31 (please) with the rapid progress we have made in every field of study, but we have almost done nothing to improve our present examination systems 32 focus on testing the students’ memory instead of their 33 ______ (able). As soon as a child begins school, he enters a world of examination 34 _________ will decide his future of job. In fact, a good examination system should encourage students to think 35 _________ themselves. But the examination now does nothing but that. It forces the students to remember 36 is taught to get high marks. Thus the students who come out first in the examination often many be the 37 (good) in their studies. In addition, such an examination system often 38 _____ (drive) teachers to cram all the time and forces them to train students what to do with the 39 ____ (come) examination.
There must be a better way to test a 40 (student) true ability as well as their knowledge.
Recently, a website has carried out a survey (31)________ the common view on graduates from Beijing University.
28% of the (32)__________(interview) companies think that they are quite (33)_______(satisfy) with the graduates from Beijing University. The graduates (34)______ their companies have a wide range of (35)________(know) and they learn things very quickly and easily.
(36)_________, most of the companies don’t think much (37)_________ graduates from Beijing University. In their eyes, the graduates always stick to their own opinions and lack the teamwork spirit (38)_________ working. Besides, they may not be satisfied with their jobs, even with big companies, and they usually ask for too much. (39)_______ a result, 34% of the companies insist that they will not employ graduates from Beijing University.
In brief, society and (40)________ the students themselves expect too much from graduates from Beijing University. That’s why a graduate claims that he is rubbish.
Many people keep small fish _31_______ pets. They keep them in a tank of water. The tank is made of glass. People can _32________ through it. They can see inside the tank and watch the fish.
The fish need room. They mustn’t be crowded. They need _33_______ to breathe.
__34_____ must be enough water for all fish. So the size of the tank is very important.
In the tank people put small plants __35________ are good for fish. They give oxygen to the water. Plants help in other ways, too. They can hide __36_______ the plants and sleep, lay eggs there.
The fish __37______ be kept in water all the time. Some can jump high. So the tank should be covered. This keeps the fish __38________ (jump) out.
The fish need food and should be fed every day. But __39____________ you give them too much food, it is very bad, for the extra food will fall to the bottom and make the water dirty. So the fish should get just enough food and finish __40___________ in ten minutes. Nothing should be left.
In North America, people are always in __31______ hurry. Children have special lessons or sports activities __32________ school. Parents often work late and ___33________ get home until 7 or 8 o’clock at night. Most North American families don’t have time to prepare a meal. That is __34_________ fast food is so popular in North America. People _____35_____ about 40% of their dollars on fast food.
People usually buy fast food from restaurant chains such as Pizza Hut, McDonald’s, or KFC,__ 36______ they can enjoy pizza, sandwiches, fried chicken, and so on. Fast food saves work and time, but it is not __37_________ (nutrition).
Fast food is popular in many countries. American fast-food companies now have restaurants all over the world. But not __38________ is happy about the spread(扩展) of North American fast food. A group of people in Italy want to fight __39_______ the spread of American fast food. They don’t like the idea of more fast food chains __40__________(open) restaurants in their country.
I asked my uncle, who plays __31_______ piano well, __32_______ he would assess (评定) the tone of a second hand piano I was hoping to buy. We arrived __33_______ the house and Uncle Frank looked the piano over, then __34_______ (sit) down and played a mixture of honky-tonk numbers and classical pieces. When he finished, we told the family that we would call ___35_______ in 15 minutes.
Outside, Uncle Frank said that ___36________ the wood was battered (坏掉的)，the sound was good and we should buy it.
When I phoned the woman back, she sounded as if she was crying. __37____ (concern), I asked, “What’s the matter?”
“We didn’t know the piano_38______ play like that,” she replied. The piano wasn’t __39_______sale, and her daughter had to resume(重新开始) taking piano __40___________.