D

A buld-it-yourself solar still(蒸馏器) is one of the best ways to obtain drinking water in areas where the liquid is not readily available. Developed by two doctors in the U.S. Department of Agriculture, it’s an excellent water collector. Unfortunately, you must carry the necessary equipment with you, since it’s all but impossible to find natural substitutes. The only components required, though, are a 5’ 5’ sheet of clear or slightly milky plastic, six feet of plastic tube, and a container— perhaps just a drinking cup — to catch the water. These pieces can be folded into a neat little pack and fastened on your belt.

To construct a working still, use a sharp stick or rock to dig a hole four feet across and three feet deep. Try to make the hole in a damp area to increase the water catchers productivity. Place your cup in the deepest part of the hole. Then lay the tube in place so that one end rests all the way in the cup and the rest of the line runs up — and out — the side of the hole.

Next, cover the hole with the plastic sheet, securing the edges of the plastic with dirt and weighting the sheet’s center down with a rock. The plastic should now form a cone(圆锥体) with 45-degree-angled sides. The low point of the sheet must be centered directly over, and no more than three inches above, the cup.

The solar still works by creating a greenhouse under the plastic. Ground water evaporates (蒸发) and collects on the sheet until small drops of water form, run down the material and fall off into the cup. When the container is full, you can suck the refreshment out through the tube, and won’t have to break down the still every time you need a drink.

1.What do we know about the solar still equipment from the first paragraph?

A.It’s delicate. B.It’s expensive.

C.It’s complex. D.It’s portable

2.What does the underlined phrase “the water catcher” in paragraph 2 refer to?

A.The tube B.The still

C.The hole D.The cup

3.What’s the last step of constructing a working solar still?

A.Dig a hole of a certain size B.Put the cup in place

C.Weight the sheet’s center down D.Cover the hole with the plastic sheet

4.When a solar still works, drops of water come into the cup form .

A.the plastic tube B.outside the hole

C.the open air D.beneath the sheet

With the development of society, it is common that many people are rushing all the way and all day, tired and sub-healthy.1. She described all the things she had to do--- one was to make her bed ---from the moment she woke up until she flew out of the door for work. I suggested she experiment by not making her bed for two weeks. She was shocked, probably thinking I’d been brought up by wolves in a forest.2.

Two weeks later she went into my office merrily. She had left her bed unmade for the first time in 42 years--- and nothing bad had happened. “And you know what?” she said. “I don’t dry my dishes anymore, either.”

3. One was discovering that she had choices in her life that she had never seen before. The other was giving herself permission to be less than perfect. This story shows an important principle about managing time: no one can do it all. Each of us has to make choices and accept trade-offs(利弊权衡). The problem is that many people choose in ways that put themselves and their health last. They take better care of their houses and cars than they do of themselves.4.

So what is the solution? There’s an easy way. Decide what you want in your life, and put that first. On a daily basis, that should include regular meals, enough sleep and time with your family. Exercise, leisure, friendships and hobbies should also be regular aspects of life. 5. The choice is yours: whatever makes you feel good about yourself and your life. Take a nap. Take a walk. Take time to play the piano. Stop bringing your briefcase home from the office. Stop keeping your house as clean as your mother kept hers. Fill more of your time with want-to-dos instead of have-to-dos.

A. Most people do not take time to relax themselves.

B. The point is to do something for yourself every day.

C. This woman had made two major breakthroughs.

D. A patient came to see me about the stress in her life.

E. Above all, you needn’t do anything for yourself regularly

F.They put everyone else’s needs ahead of their own.

G. However, she went along with my idea.

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