Are you facing a situation that looks impossible to fix?
In 1969，the pollution was terrible along the Cuyahoga River near Cleveland，Ohio．It___（be）unimaginable that it could ever be cleaned up．The river was so polluted that it__
__（actual）caught fire and burned．Now，years later，this river is one of_
___most outstanding examples of environmental cleanup．
But the river wasn't changed in a few days______even a few months．It took years of work__
__（reduce）the industrial pollution and clean the water．Finally，that hard work paid off and now the water in the river is_
___（clean）than ever．
Maybe you are facing an impossible situation．Maybe you have a habit___is driving your family crazy．Possibly you drink too much or don't know how to control your credit card use．When you face such an impossible situation，don't you want a quick fix and something to change immediately?
While there are____（amaze）stories of instant transformation，for most of us the__
__（change）are gradual and require a lot of effort and work，like cleaning up a polluted river．Just be__
__（patience）．
The truthtrees 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.
请写一篇吸烟危害的短文.
内容要点:
吸烟会导致许多疾病,甚至一些危及生命的疾病.
吸烟不但对吸烟者自己有害,也严重影响不吸烟者的健康.
据报道,美国每年至少有32万人因吸烟而丧生.目前约有四千万人仍在吸烟.
可喜的是,越来越多的人已认识到其危害,开始戒烟.
青年学生不应该养成这一恶习,如有这一习惯,应尽早戒除.
Nowadays, it is common that more and more high school students open their own micro blogs on the Internet. For one thing, it can provide a colorful platform to show their talent. For _, it is a useful way
___（release）their pressure. And all these make it more and more popular with high school students.
_many parents and teachers hold a different view. They think that
__（manage）one’s micro blogs will takea lot of time and energy,
___should be used to study．
In my view, I am in favor__the activity. Today the Internet is playing an important role in our life.
__, as high school students of the Information Age, we need to learn to make use of this meaningful tool to communicate and display
__（us）.What’s more, opening and organizing micro blogs need various abilities such as writing, designing, being skillful at computer and so on. Only if we master those abilities can we make a successful micro blog.
___a result, we improve ourselves while organizing our micro blogs.
In fact, micro blog itself is of little harm．It is your attitude towards it _matters.We should take the advantages and avoid some bad effects.
John was studying when he heard（尖叫声）．When he rushed
（出来），he found Anne Slade was lying in her front garden bleeding
.Her hands had almost been cut off. John immediately asked a number of nearby people for
（绷带），and, when nobody could put their hands on any, his father got some tea towels and tape from their house. John used these to
（治疗）the most severe injures to Ms Slade's hands. He
the bleeding by applying pressure to the wounds
the police and ambulance arrived.
“I am proud ofI did, but l was just doing what I'd been taught ,”John said.
“There is no doubt John's quick thinking and the first aid skills he learned at school save Ms Slade's life. It shows that a
（知识）of first aid can make a real difference.”Mr. Alan Southerton said.
阅读下面短文，根据以下提示：1）汉语提示，2）首字母提示，3）语境提示，在每个空格内填入一个适当的英语单词，并将该词完整地写在右边相对应的横线上。所填单词要求意义准确，拼写正确。
As we all know, if adolescents become addicted to smoking, it will do terrible d_____ to their heart and lungs.
Q________ smoking is difficult but not impossible. So as a young man if you are
______(下决心) to give up smoking, please accept my advice. First, you had better choose a day that is not
_____ (有压力的) to stop smoking and throw away all your
____. Secondly you should always remind
_____ that you are a non-smoker when you feel like smoking.
_____ your spare time you should try your best to
_____(培养) some other habits to keep yourself busy. You can stop smoking with a friend or join a group.
_____ necessary, ask a doctor or chemist for help.
L_____, what matters most is to keep trying. Don’t feel disappointed if you smoke again. Just try again.