根据短文内容，从下边的A—F选项中选出能概括每一段主题的最佳选项。选项中有一项为多余选项。
A . The different structure of blue holes.
B. Why scientists are interested in blue holes.
C. How a blue hole comes into being.
D. Blue holes exploring is becoming popular.
E. Rules to obey when diving into blue holes.
F. The general definition of a blue hole.______________
A blue hole is a flooded sea cave with a hole that opens up at the land's surface. These cave systems form in carbonate rock, often on islands. Some blue holes have very special rock formations and water chemistry. Far below sea level, they contain some of the harshest environments on Earth, with no oxygen and no light. Yet these areas are filled with life forms that have adapted to the extreme conditions.___________
Blue holes get their name from the color some have when seen from the air. The color is usually a reflection of the sky on the water. Blue holes are the result of erosion in which water breaks down rock. Rain falling thousands of years ago contained chemicals which slowly wore away at the limestone landmass. These holes later filled with sea water as the sea level changed. The rising and falling of sea levels and the mixture of salt and fresh water further wore away at these cave formations.___________
These flooded cave systems can be found in the ocean, or they can be found inland. Ocean caves are affected by tides, so they always have water movement. But blue holes on land are very still. They have several layers of water, chemicals, and bacteria. The top layer of fresh water comes from rainfall. This layer acts like a cap on top of the layered mixture, and keeps out oxygen from the atmosphere. The fresh water floats on a denser layer of saltwater. Underneath this is a layer of poisonous hydrogen sulfide, produced by bacteria living in the water. Underneath this layer is anoxic seawater -- water that does not contain any oxygen.___________
Information gathered from these blue holes is helping scientists to increase their understanding of biology, archaeology and geology. But exploring these blue hole environments brings danger as well as discovery. Scientists are interested in these caves because oxygen-free conditions there are similar to those on Earth long ago, before oxygen existed on our planet. But there are many difficulties involved in diving into blue holes. ___________
One reason blue holes have not been fully explored is that they can be extremely dangerous. There are many safety rules that divers must follow to help ensure their survival. First, divers must have training and experience to swim in these caves. Divers who explore a cave for the first time must establish a thin rope called a guideline. This line helps them to safely enter and exit the cave without getting lost.
阅读下列网页信息，并按照要求匹配信息。
A. www.games.sina.com
In this website you can find a lot of net games to play. You can play the games by yourself or with others through the net. Anyone who is fond of computer games will be fond of the website. He is sure to have a good time.
B. www.google.com
This website is very useful because it can help you search for different websites. You can type the names in it and then the website you hope to find will be shown at once. It is said that it contains more information than other search engines.
C. www.rongshuxia.com
This is a website for the literature lovers. The people who are fond of literature can read others’ works and they can also write what they want to. There are many different kinds of literature forms such as poems, novels and so on.
D. www.nba.com
This is a website about American National Basketball Association, where you can find all the information about the NBA teams and the scores of basketball matches. If you are interested in basketball stars you can also find a lot of introduction about them.
E. www.rollingsone.com
This is a music website and you can find a lot of latest songs. The most interesting thing about this website is that you can even record your songs in the website and make others enjoy your voice! It’s marvelous, isn’t it?
F. www.ample.technology.com
The website represents many leading American and European manufacturers distributing the world’s most advanced devices, equipment and biochemical supplies into China. We specialize in the fields of biological engineering.
请阅读以下5个人的个人信息，然后匹配人物和适合他/她的网站：Professor David is a Canadian but he is interested in the Chinese poems, especially the Tang Poems.
Susan is a basketball fan and she is eager to know the career of the famous star—Michael Jordan.
Li Ming is tired of his study and he hopes to be relaxed for a moment. He doesn’t think music is a good way of relaxation.
Dickson is an engineer working in a large American company who wants to catch a glimpse of the latest development of technology.
Jeremy wants to find some information about a new sport.
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项.选项中有两项为多余选项）
Taking good notes is a time-saving skill that will help you to become a better student in several ways. Second, your notes are excellent materials to refer to when you are studying for a test. Third, note-taking offers variety to your study time and helps you to hold your interest.
You will want to take notes during classroom discussions and while reading a textbook or doing research for a report. whenever or however you take notes, keep in mind that note-taking is a selective process.
The following methods may work best for you.
• Read the text quickly to find the main facts and ideas in it.
• Carefully read the text and watch for words that can show main points and supporting facts.
• Write your notes in your own words.
•
• Note any questions or ideas you may have about what was said or written.
As you take notes, you may want to use your own shorthand(速记). When you do, be sure that you understand your symbols and that you use them all the time.
| A．Use words, not complete sentences. |
| B．There are three practical note-taking methods. |
| C．You must write your notes on separate paper. |
| D．Otherwise, you may not be able to read your notes later. |
E.You will also want to develop your own method for taking notes.
F.That means you must first decide what is important enough to include in your notes.
G.First, the simple act of writing something down makes it easier for you to understand and remember it.
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Choosing the right job is probably one of the most important decisions we have to make in life, and it is frequently one of the hardest decisions we have to make. One important question that you might ask yourself is: “How do I get a good job？”____.
There are people who can answer an insignificant（无关紧要的） advertisement in the local paper and land the best job in the world; others write to all sorts of places all over the country, and never seem to get a reply at all. Still others believe that the in person, doortodoor approach is by far the best way to get a job; and then there are those who, through no active decision of their own, just seem to be in the right place at the right time. ____. He used to spend a lot of his free time down by the sea watching the tall ships, but never thinking that he might one day sail one of them. His father was a farmer, and being a sailor could never be anything for the boy but an idle dream. One day, on his usual wandering, he heard the captain of the ship complaining that he could not sail because one member of his crew was sick. Without stopping to think, the lad(少年)offered to take his place. __
__.
____. If the lad had gone home to ponder(考虑)his decision for a week, he may have missed his chance. It is one thing to be offered an opportunity; it is another thing to take it and use it well.
Sometimes we hear stories about people who break all the rules and still seem to land plum jobs(美差). When you go for a job interview or fill out an application, you are expected to say nice things about the company to which you are applying. ____. And within a year this person had become general manger of the company.
| A．This story also illustrates the importance of seizing an opportunity when it presents itself. |
| B．People find jobs in an infinite number of ways. |
| C．It’s almost impossible to find a good job by answering advertisement in newspapers |
| D．Take for example the young man who wanted to be a sailor. |
E．But there was one person who landed an excellent job by telling the interviewer all the company's faults.
F．He spent the rest of his life happily sailing the ships he had always loved.
G．It is very important to seize an opportunity when it presents itself.
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Culture shock is a special disease for people who have suddenly moved to a foreign country. .
Culture shock is caused by the anxiety that results from losing all familiar signs of social communication.When to shake hands and what to say, when we meet people, when and how to give tips, how to do shopping, when to accept and refuse invitations, when to take statements seriously and when not. These signs, which may be words, gestures, facial expressions, or customs, are acquired（获得） by all of us in the course of growing up and as much a part of our culture as the language we speak or the beliefs we accept.
.
Now when a person enters a strange culture, all or most of these familiar signs are removed. No matter how broadminded will you may be, a series of supports have been knocked from under you, followed by a feeling of failure in much the same way.“The ways of the host country are bad because they make us feel bad.” When foreigners in a strange land get together to complain about the host country and its people, you can be sure that they are suffering from culture shock.
Another phrase of culture shock is regression（退化）. The home environment suddenly becomes very important. To the foreigner, everything becomes unreasonably beautified. All the difficulties and problems are forgotten and only the good things back home are remembered. .
| A．Nowadays a lot of people work at home. |
| B．The children are taught to respect different cultures ． |
| C．Like most illnesses, it has its own symptoms（病症） and cures. |
| D．It usually takes a trip home to bring one back to reality. |
E. First they reject the environment which causes discomfort.
F. Those signs include many ways in which we are used to the situation of daily life.
G. All of us depend on hundreds of these signs, most of which we do not carry on the level of conscious awareness（察觉）.
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Making Peace with Your Parents
As a teen, you’re going through big changes physically and mentally. Your interests are expanding. .
Here is the challenge: Kids need to explore the world in new ways, and parents need to protect them from the dangers that are out in that world. These conflicts can easily set off fireworks in otherwise calm houses. Sometimes conflicts can’t be avoided. But by paying attention to the building blocks of successful relationships, you can work towards making home a happy and healthy place for you and your parents.
For instance, try to find a time to talk when your parents are not angry, tired, distracted, or hungry. A good time to talk is when you’re all relaxed. Timing is everything. If the conversation begins to turn into an argument, you’d better calmly and coolly ask to stop the conversation --- for now.. Listen to what your parents are saying, and repeat it back to them. This shows them that you’re listening.
.
Respect is the building block of good communication. People who respect each other and care about each others’ feelings can disagree without things getting ugly. . How do you build trust? Trust comes by actually doing what you say you’re going to do. Some teens find that doing fun activities with their parents can improve their relationships. Sometimes we forget that parents are more than rule-makers --- they’re interesting people who like to watch movies, and go shopping --- just like their teenagers!
What do you do if you are trying your best, but your relationship with your parents continues to be rocky?. You can find supportive adults, such as a teacher or a coach, who can lend an ear.
Remember you can only change your own behavior. You parents are the only ones who can change theirs.
| A．It also gives them a chance to clear things up if you’re not on the same page. |
| B．You can pick it up again when everyone’s more relaxed. |
| C．And then you’ll be able to accept what your parents say. |
| D．Faced with the challenge, children don’t know what to do. |
E.You are more likely to get along with your parents and have more independence if your parents believe in you.
F.And your desire to take control of your own life is growing.
G.You may consider seeking outside help.