In a little-known part of the counter-terrorism（反恐怖主义） world, one of the most effective detection systems is a 600-pound animal that works for about 20 pounds of fish a day.
Since the 1960s, the United States and a handful of other countries have trained dolphins and sea lions to detect sea mines and swimmers, to recover inert torpedoes（鱼雷）and to test objects used in Naval exercises.
Program officials estimate that the sea lions in the Marine Mammal Program have recovered millions of dollars of U.S. Naval torpedoes and instrumentation dropped on the sea floor.
The U.S. Navy kept its Marine Mammal Program a secret until the 1990s, and this spring CNN became one of only a handful of media outlets to see firsthand how the program works.
The program has trained about 75 Pacific bottlenose dolphins, with natural biosonar (生物声纳) that tracks better than any manmade device; and 35 California sea lions, with superb underwater eyesight.
Not only do these trained marine mammals track and retrieve millions of dollars in U. S. military equipment, they are also helping to save lives.
The Navy won't disclose whether the dolphins and sea lions have effectively intercepted （阻拦）terrorists attempting to do harm to any U.S. facilities.
"Either way, it serves as a deterrent（阻碍） effect." says Christian Harris, operations supervisor for the program. The mammals can be deployed（调动） via C-130 cargo aircraft to perform their missions anywhere in the world within 72 hours. They have been used in exercises from Alaska to Hawaii, operating in great temperature and environmental ranges. They also have the capability to operate off vessels.
Dolphins most recently were deployed in the Iraq war, performing mine detection and clearance operations in the Persian Gulf to ensure safe passage for humanitarian ships delivering aid. Some of these Iraq war "veterans" are now back home, tasked with a new mission: guarding nuclear submarines in their homeports of Bremerton, Washington, and Groton, Connecticut.The underlined word "retrieve" in Paragraph 6 can be replaced by ________.
| A．find out | B．recover | C．save | D．detect |
Which is NOT the purpose of the Marine Mammal Program?
| A．To detect sea mines and swimmers. |
| B．To save lives of people. |
| C．To recover inert torpedoes. |
| D．To help the U.S. Naval test equipment. |
What can be inferred according to the text?
| A．These trained marine mammals eat pounds of fish a day. |
| B．The U.S. Navy performed the Marine Mammal Program for about 30 years secretly. |
| C．These mammals can carry out a task everywhere. |
| D．A lot of countries will train dolphins and sea lions for anti-terrorism. |
What would be the best title for the passage?
| A．The Special Skills of Marine Mammals | B．The U.S. Anti-terrorism Program |
| C．Exceptional Anti-terrorism Member | D．Trained Marine Mammals |
Sometimes people add to what they say even when they don’t talk. Gestures are the “silent language” of every culture. We point a finger or move another part of the body to show what we want to say．It is important to know the body language of every country or we may be misunderstood.
In the United States，people greet each other with a handshake in a formal introduction．The handshake must be firm．If the handshake is weak，it is a sign of weakness or unfriendliness．Friends may place a hand on the other’s arm or shoulder．Some people，usually women，greet a friend with a hug（拥抱）．
Space is important to Americans．When two people talk to each other，they usually stand about two and a half feet away and at an angle，so they are not facing each other directly．Americans get uncomfortable when a person stands too close．They will move back to have their space．If Americans touch another person by accident，they say “Pardon me” or “Excuse me”．
Americans like to look at the other person in the eyes when they are talking．If you don’t do so，it means you are bored，hiding something，or are not interested．But when you stare at someone，it is not polite．
For Americans，thumbs-up means yes，very good，or well done．Thumbs-down means the opposite．To call a waiter，raise one hand to head level or above．To show you want the check，make a movement with your hands as if you are signing a piece of paper．It is all right to point at things but not at people with the hand and index finger（食指）．Americans shake their index finger at children when they scold them and pat them on the head when they admire them．
Learning a culture’s body language is sometimes confusing（使糊涂的）．If you don’t know what to do，the safest thing to do is to smile．From the first paragraph we can learn that ________．
| A．gestures don’t mean anything while talking |
| B．gestures can help us to express ourselves |
| C．we can learn a language well without body language |
| D．only American people can use gestures |
If you are introduced to a stranger from the USA，you should _______．
| A．greet him with a hug |
| B．place a hand on his shoulder |
| C．shake his hand firmly |
| D．shake his hand weakly |
In the United States，people often ________．
| A．show their friendship by touching each other |
| B．show their friendship by glancing at each other |
| C．say “Pardon me” to each other when they are talking |
| D．get uncomfortable when you stand close to them |
If you talk with an American friend，it’s polite to ________．
| A．look up and down at your friend |
| B．look at the other person in the eyes |
| C．hide your opinion |
| D．look at your watch now and then |
Throughout history, people have been interested in knowing how language first began, but no one knows exactly where or how this happened. However, we do know a lot about languages, the languages of today and also the languages of earlier times. There are probably about three thousand languages in the world today. Chinese is the language with the most speakers. English, Russian and Spanish are also spoken by many millions of people. On the other hand, some languages in the world have less than one hundred speakers.
There are several important families of languages in the world. For example, most of the languages of Europe are in one large family called Indo-European. The original (最初的) language of this family was spoken about 4,500 years ago. Many of the present day languages of Europe and India are modern forms of the language of 4,500 years ago.
Languages are always changing. The English of today is very different from the English of 500 years ago. In time some even die out completely. About 1,000 years ago English was a little -known relative of German spoken on one of the borders（边界）of Europe.
If a language has a lot of speakers or if it is very old, there may be differences in the way it is spoken in different areas. That is, the language may have several dialects. Chinese is a good example of dialect differences. Chinese has been spoken for thousands of years by many millions of speakers. The differences between the dialects of Chinese are so great that speakers of Chinese from some parts of China cannot understand speakers from other parts.The first paragraph mainly tells us that_______.
| A．most people in the world speak Chinese |
| B．there are thousands of languages in the world today |
| C．man has much knowledge about languages |
| D．some people know several languages |
Many European and Indian languages ______.
| A．will soon die out completely |
| B．were once a relative of English |
| C．are the same as before |
| D．come from the same family |
____ seems to have changed a lot
| A．Chinese | B．English | C．Spanish | D．German |
The best title of this passage is .
| A．English | B．Changes of English |
| C．Chinese | D．Knowledge of Language |
Today anyone will accept money in exchange for goods and services.People use money to buy food, furniture,books,bicycles and hundreds of other things they need or want. When they work, they usually get paid in money.
Most of the money today is made of metal(金属) or paper. But people used to use all kinds of things as money. One of the first kinds of money was shells.
Shells were not the only things used as money. In China , cloth and knives were used. In the Phillipine Islands, rice was used as money for a long time. Elephant tusks,monkey tails and salt were used as money in parts of Africa.
The first metal coins were made in China. They were round and had a square hole in the centre.People strung(串联)them together and carried them from place to place.
Different countries have used different metals and designs for their money. The first coins in England were made of tin(锡).Sweden and Russia used copper(铜)to make their money. Later some countries began to make coins of gold and silver.
But even gold and silver were inconvenient if you had to buy something expensive. Again the Chinese thought of a way to improve money. They began to use paper money. The first paper money looked more like note from one person to another than the paper money used today.
Money has had an interesting history from the days of shell money until today.The main use of money is that _________.
| A．people use it to buy things to eat |
| B．people accept money only in exchange for clothes |
| C．people accept money in exchange for goods and service |
| D．people will accept money for giving our goods to others |
What did the first Chinese metal coins look like?
| A．They had square hole in the centre. |
| B．They were just like shells. |
| C．They were round like the moon. |
| D．They were round with a square hole in the centre. |
Who thought of a way to use paper money first?
| A．The Chinese | B．The Russian |
| C．The Sweden | D．The English men |
The best title of this passage should be ________.
| A．The Chinese money | B．The history of money |
| C．Some things about money | D．What is money |
Getting rid of dirt, in the opinion of most people, is a good thing. However, there is nothing fixed about attitudes to dirt.
In the early 16th century, people thought that dirt on the skin was a means to block out disease, as medical opinion had it that washing off dirt with hot water could open up the skin and let ills in. A particular danger was thought to lie in public baths. By 1538, the French king had closed the bath houses in his kingdom. So did the king of England in 1546. Thus began a long time when the rich and the poor in Europe lived with dirt in a friendly way. Henry IV, King of France, was famously dirty. Upon learning that a nobleman had taken a bath, the king ordered that, to avoid the attack of disease, the nobleman should not go out.
Though the belief in the merit of dirt was long-lived, dirt has no longer been regarded as a nice neighbor ever since the 18th century. Scientifically speaking, cleaning away dirt is good to health. Clean water supply and hand washing are practical means of preventing disease. Yet, it seems that standards of cleanliness have moved beyond science since World War Ⅱ. Advertisements repeatedly sell the idea; clothes need to be whiter than white, cloths ever softer, surfaces to shine. Has the hate for dirt, however, gone too far?
Attitudes to dirt still differ hugely nowadays. Many first-time parents nervously try to warn their children off touching dirt, which might be responsible for the spread of disease. On the contrary, Mary Ruebush, an American immunologist(免疫学家)，encourages children to play in the dirt to build up a strong immune system. And the latter position is gaining some ground.The kings of France and England in the 16th century closed bath houses because .
| A．they lived healthily in a dirty environment |
| B．they thought bath houses were to dirty to stay in |
| C．they believed disease could be spread in public baths |
| D．they considered bathing as the cause of skin disease |
Which of the following best describes Henry IV’s attitude to bathing?________.
| A．Afraid | B．Curious | C．Approving | D．Uninterested |
The underlined sentence in paragraph one is closest in meaning to __________.
| A．Attitudes to dirt are different in different times |
| B．Nothing is fixed for the attitudes to dirt |
| C．Attitudes to dirt never change |
| D．There isn’t anything fixed for attitudes to dirt |
How does the passage mainly develop?____________.
| A．By providing examples | B．By making comparisons |
| C．By following the order of time | D．By following the order of importance |
What is the author’s purpose in writing the passage?___________.
| A．To stress the role of dirt |
| B．To introduce the history of dirt |
| C．To call attention to the danger of dirt |
| D．To present the change of views on dirt |
It’s our hope that the calculator will promote action, awareness and empowerment by showing you that one person can make a difference and help stop global warming.
There are many simple things you can do in your daily life—what you eat, what you drive, how you build your home—that can have an effect on your immediate surroundings, and on places as far away as Antarctica. Here is a list of things that you can do to make a difference.
Use Compact Fluorescent Bulbs
Replace 3 frequently used light bulbs with compact fluorescent bulbs. Save 300lbs (pounds) of carbon dioxide and $60 per year.
Use Recycled Paper
Make sure your printer paper is 100% post consumer recycled paper. Save 5lbs of carbon dioxide per ream of paper.
Take Shorter Showers
Showers account for 2/3 of all water heating costs. Save 350 lbs of carbon dioxide and $99 per year.
Buy Products Locally
Buy locally and reduce the amount of energy required to drive your products to your home.
Carpool When You Can
Own a big vehicle？Carpooling with friends and co-workers saves fuel. Save 790 lbs of carbon dioxide and hundreds of dollars per year.
Don’t Idle in Your Car
Idling wastes money and gas, and generates pollution and global warming causing emissions. Except when in traffic, turn your engine off in you must wait for more than 30 seconds.
Buy Organic food
The chemicals used in modern agriculture pollute the water supply, and require energy to produce.
Turn Off Your Computer
Shut off your computer when not in use, and save 200 lbs of carbon dioxide. Conserve energy by using your computer’s “sleep mode” instead of a screensaver.
With a Stop Global Warming calculator which costs you only $50 in hand, you will find what you do does count. The Stop Global Warming calculator can serve the following purposes EXCEPT __________.
| A．introducing the ways of saving carbon dioxide |
| B．Telling how to save money in your daily life |
| C．promoting action, awareness and empowerment and helping stop global warming |
| D．introducing how global warming is formed |
How many tips are related to cars?__________.
| A．1 | B．2 | C．3 | D．4 |
Which of the following is NOT true according to the list of tips? ___________.
| A．Using a screensaver instead of the computer’s “sleep mode” |
| B．Buying products in the neighborhood |
| C．Using recycled printer paper |
| D．Replacing frequently used light bulbs with compact fluorescent bulbs |
What does the underlined word “carpooling” mean according to the passage?____.
| A．Changing your big vehicle into a small one with your friends and co-workers to save fuel |
| B．Going to the pool with your friends and co-workers by car |
| C．Trying to share a big vehicle with your friends to save fuel |
| D．Washing the car in a pool by yourself instead of having it washed by your |
friends and co-workers What is the purpose of the author writing this passage?___________.
| A．Giving people tips on how to save money in life |
| B．Telling people how to be environment-friendly |
| C．Promoting the product “Stop Global Warming calculator” |
| D．Telling people how to prevent carbon dioxide from being released |
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