阅读下面材料，在空白处填入适当的内容(不多于3个单词)或括号内单词的正确形式。
The truth trees are vital to our life is not a secret. They provide us with food, wood and most
(important), oxygen. Now there is one more thing we can add to this list—blocking out harmful bacteria from water.
The discovery (make) by a team
(consist) of scientists from the Massachusetts Institute of Technology (MIT) and high school students
were seeking a natural water filter—one that would help communities in developing countries that do not have
(accessible) to modern water filter systems.
The (research), led by Professor Rohit Karnik, decided to turn to trees for help because they could allow liquid to flow through, while blocking out air bubbles.
They began by cutting 1.5-inch-wide sections of tree bark from the branches of a white pine tree. The people related then tested the wood’s filtering ability by pouring water containing red dye particles of different sizes through. their amazement, they found that it was effective in trapping all the articles.
(encourage), the team conducted
experiment, this time with water that contained bacteria. Sure enough, the sapwood held back 99% of the bacteria, allowing only 1% to flow through.
Vitamins are complex chemical substances (find) in many foods. The human body needs them for health and
(grow). The body makes some vitamins, but usually in amounts too small to meet its needs.
vitamins are not made in the body. These must __
_(supply). No one knows
(exact) how all vitamins work. Doctors do know that vitamins have very special uses.
, One vitamin cannot take the place of another. The steady absence of one vitamin causes a deficiency disease. Rickets, scurvy, and pellagra are examples_
__ deficiency diseases.
It is best to get vitamins eating the foods in which they occur. There are also pills that contain a single vitamin _
_a combination of vitamins. People should ask their doctors_
__they take any vitamin pills.
If we agree that the function of education is to prepare us for life, then there is very little time to waste. So, while we can, we ought to concentrate ________ teaching children something really useful.
Politeness is a mark of civilization. _________ sooner children learn this, the better. In any case, a lot can be accomplished by a smile and good manners.
Like it or not, our adult lives will be consumed by the struggle for money, but we don’t make an effort to teach children _________ to mange it. So our schools have a duty to teach them this ability from the beginning.
Children should learn to take care ________their health. They should know that
________they eat junk food, they will become fat and unhealthy. They should be very clear about
________ will happen to their bodies when they smoke or drink.
All of _________ are part of society. We have rights and responsibilities. We have to know a little bit of our history and geography, because we need to have an environment in which to relate to the people around us. Our school should spend every moment they have telling this to our children: “This is life, this is what you are going to face
________ this is how you deal with it.
I’m very glad I had the opportunity to meet Chris. He moved into the house next to two years ago. Usually he
(dress) in some kind of tight-fitting multicolored suit which makes him look like
super hero of comic books. He is very polite,
(friend) and genuinely caring, always remembering my birthday and
(bring) me chicken soup or Chinese tea if I’m ill. Chris will help us
he possibly can and is willing to listen to everyone’s problems.
At work he is much appreciated and he has many colleagues ask for his advice each time they have problems
(solve). His work includes
(communicate) with people. He has the power to make it. Although Chris could never be described as ordinary, I enjoy having him
a neighbor. Life is never boring when you have someone like him living next door.
Odysseus is a literary figure in the Odyssey (write) by Homer. He rejected the comfortable life of a Greek king and made a promise to help another Greek leader, Menelaus, get
wife back. But the war
(drag) on and on and he was away from his family for ten years.
During this time the fortunes of the war were so (change) that no one could predict
would win. Odysseus became tired of the war and the delay in Troy. He urgently wanted to return home, so
the Greek kings had their regular weekly meeting, he suggested that they take
opportunity to trick the Trojans. The Greeks built a giant wooden horse so that men could hide inside it. The Greeks then pretended to leave as if they
(discourage) by the length of the war. The Trojans blessed their God
their good fortune and prepared to celebrate.
That night the men climbed out of the horse and opened the city gates to the Greek army. The Trojans awoke to the sound of the warning bell (announce) a Greek victory. So the war ended but the punishment of the Trojan people was only just beginning.
When (ask) to point out one or two things that are most important to themselves, many put friends ahead of homes, jobs, clothes and cars.
A true friendship carries a long history of experience that determines we are and keeps us connected. It is a treasure we should protect. Unfortunately, the
(good) friends you are, the more probable you’ll have disagreements. And the result can be what you don’t want---
end to the relationship.
The good news is that most troubled friendships can be mended. First, don’t let your pride get in your way. Most of us can forgive each other when differences (bring) out in the open. Second, apologize when you’ re wrong - even if you have been wronged . Over the course of a friendship, even the best people make mistakes. Sometimes, it may be best
the wronged person takes the lead and apologizes. When you apologize, give your friend a chance to admit that he has been wrong. Third, see things
your friend’s point of view. And finally, accept that we change friendships as
needs and lifestyle change. Making friends can sometimes seem easy. The hard part is keeping the connections strong during the
(nature) ups and downs that have an effect
all relationships. My suggestion: Consider friendship an honor and a gift, and worth the effort to treasure and nurture (培养).
粤公网安备 44130202000953号