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。

　　 It is a new term in today's tourism industry．But in an age of growing environmental awareness, it is not too difficult for us to imagine and understand this new form of holiday．

　　Ecotourism, which is considered as a kind of responsible tourism, is typically defined（定义）as travel to places where special and unusual plants, animals and cultural heritages （遗产） are the main ttractions．  Therefore, programs concerning the protection of some natural and cultural spots also form'a part of ecotourism．　　Ecotourism is developing at great speed．According to a recent report by the World Tourism Organization, ecotourism in recent years has enjoyed an annual growth of about 5% worldwide．   They include bird watching, hiking, diving, photography and taking part in various kinds of local cultural events．　　  However, it looks like some smaller towns and country areas may well become the new destinations for people to visit tomorrow because they are rich in ecological, cultural and historical resources （资源）．

　　Ecotourism has been gaining increasing recognition and popularity mainly for the relaxing, natural and vivid experience it offers to tourists．People are attracted to nature  and long to be close to it．However, a conflict between nature and human beings is unavoidable． 

　　A．The definition of ecotourism is beyond words．

　　B．It takes ecology and culture into consideration．

　　C．You may not be very familiar with "ecotourism"．

　　D．More than 80 activities have been listed for ecotourism．

　　E．People can have great fun enjoying nature through ecotourism．

　　F．Big cities are still the major places that attract tourists in our society today．

　　G．How to protect natural resources while taking advantage of them is of great importance．

首先请阅读下列书城畅销书的封面及基本信息, 第61-65题是这些书的简要内容，请匹配相关的书名。

A．Foreword
	The Antidepressant Survival Guide: Beat the Side Effects of Your Medication by Robert J. Hedaya, M.D, Robert J. Hedaya, M.D., is a clinical professor of psychiatry at Georgetown University Hospital's Department of Psychiatry. Motto: Live well.
B．How Fear Limits Us
	On Becoming Fearless... in Love, Work, and Life by Arianna Huffington Arianna Huffington was raised in Greece by her fearless mother. She has written this book for her two daughters in the hope that they will lead fearless lives. Motto: Overcome the obstacle, get over the next hill.
C．Determination: How to Set Goals and Go After Them
	Fight Your Fear and Win by Don Greene, Ph.D. Don Greene, Ph.D., was a nationally ranked high school diver. He was the sports psychologist for the U.S. Olympic Diving Team. Motto: Determination is drive.
D．The Anger Business
	Anger : The Misunderstood Emotion by Carol Tavris, Ph.D. Carol Tavris, Ph.D., was senior editor. She now teaches from time to time in the department of psychology at UCLA Motto: Reduce Stress!
E．In the Presence of Danger
	The Gift of Fear by Gavin de Becker Davin de Becker, America’s leading expert on violence, is the bestselling author of the Gift of Fear: Survival Signals. Motto: Trust and act on our straight instincts.
F．Moving from Fear to Freedom
	Transforming Anxiety, Transcending Shame by Rex Briggs, M.S.W. REX BRIGGS, M.S.W., has been a selected speaker at the National Anxiety Disorders Association of America’s conferences since 1986. Motto: Weaken anxiety

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.

1.______________

??? 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.

2.___________

??? 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.

3. ____________

??? 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.

4.___________

??? 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.

5.___________

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.

Medalists of the 1948 London Olympic Games look back on their summer of victory.

SAMMY Lee, 91, U.S.

GOLD AND BRONZE, DIVING

I first had my Olympic dream at 12, when they held the 1932 Olympics in Los Angeles. My father and I were at a grocery store, and I asked, “What are all the flags doing here?” He said, “We are having the Olympic Games. That’s where they honor the greatest athletes in the world.” I said, “Papa, someday I’m going to be an Olympic champ.”

Walking up the 10-meter platform, I thought to myself, “I’ve waited 16 years for this moment. Am I going to win?” So I prayed to God that I was most deserving of winning the Games.

DAVID BOND, 90, BRITAIN

GOLD, SAILING

During the war, I spent six years in Royal Air Force. I think in general, the 1948 Olympics meant very little to most people. We were too busy after the war to be worried about sport very much anyway.

Our team had about six weeks before the Olympics down at Torquay and we went out sailing every day.

Winning gold was quite something. It was nice to stand on the platform with lots of people cheering. We celebrated by going to a big dance.

MICHAEL LAPAGE, 88, BRITAIN

SILVER, ROWING

I started rowing when I was 14. I joined the navy in 1942. In 1945 the war came to an end and I started rowing again.

In 1948 we were still on rations (配给供应): 4 oz. of red meat a week. But the United States had all the meat they wanted. They were the favorites to win.

On the day of the final, we led the Americans at the start, but their stronger staying power took them through to win. There were no ribbons on the medals, so we just showed them round the family.

THOMAS GODWIN, 91, BRITAIN

BRONZE, CYCLING

At 14 I left school and got a job delivering groceries on a bicycle, which excited my interest in cycling. When the war broke out, I volunteered but was held back, so I continued riding.

After my team won our bronze medals, we went home just round the corner and had a sit-down and a chat and a laugh. It was a different world. Money was never, never thought about.

1. According to the passage, Sammy Lee ___________.

A．was 28 when he attended the 1948 Olympics

B．never thought he could win medals in diving

C．found that he has a talent for sports at age 12

D．prepared for the 1948 Olympics for 16 years

2. Michael Lapage blamed his team’s loss of the gold medal on their ___________.

A．weak will                              B．poor skill

C．poor nutrition                          D．hurried preparation

3. What did David Bond and Thomas Godwin have in common?

A．They both took part in a team event.

B．A lot of money was awarded to them.

C．The 1948 Olympics meant little to them.

D．They both served in the army during World War II.

4.What would be the best title for the passage?

A．Long-lived medalists                     B．The 1948 Olympics

C．Famous athletes                        D．Great in 1948