The Burj A1 Arab is a luxury hotel in Dubai. It stands on a man-made island     1    (locate) just off Dubai’s coast, and is connected to the mainland by means of a private bridge. The amazing building is one of the tallest hotels in the world. It was designed to look like the sail of a “dhow”，     2     type of Arabian boat. Tom Wright, the designer of the hotel, said he wanted the Burj A1 Arab to be a symbolic     3     (construct) for Dubai like the Eiffel Tower is for Paris.

The Burj A1 Arab has 202 rooms as well as six award-winning restaurants. One of these restaurants, the A1 Muntaha,     4     (offer) fantastic views of Dubai, because it is 200 metres above sea level.

Guests     5     decide to stay at the Burj A1 Arab can look forward to     6     (receive) extremely good service. From the moment you check in to the moment you are dropped off at the airport, the hotel’s staff take care of everything.

    7    (fortunate), entry into the Burj A1 Arab is not allowed unless you are a hotel guest. But don’t worry; views of the outside of the hotel are as     8     (impress) as views of its inside. So, if you ever visit Dubai, be sure     9     (take) a photograph of the Burj A1 Arab. It is     10    a doubt one of the most beautiful hotels in the world!

    1     (locate) in the north-east of Italy, Venice is known as “The Floating City”. It is made up of over 100 small islands, which are connected by waterways and bridges.     2     (fortunate), water is also putting Venice in great danger. Saltwater is slowly damaging the bases of Venice’s buildings. The Floating City is, in fact, sinking.

More problems are caused by floods,     3     usually hit the city each winter. But these floods could now be a thing of the past thanks to a new flood     4     (prevent) project. Venice lies in     5     middle of a lagoon, and rain and strong winds cause seawater to travel through the natural gaps to Venice. Dozens of gates     6     (build) to hold back the sea until now. Each of these gates is 20 meters wide,     7     the longest about 30 meters long. In the event of a big rise in the water level, the gates will be raised     8     (separate) the city from the sea.

But only time will tell     9     this project is the right solution. The important thing is that action is being taken to protect this unique city for future generations. And if it works, it means a longer,     10     (dry) future for Venice.

A population of the world's most invasive mosquito species was almost completely wiped out by    1    experiment on two islands in the southem Chinese province of Guangdong, according to a study , which     2    (publish) Wednesday

The experiment successfully reduced the female Asian Tiger Mosquito population-the main source of bites and disease transmission-by up to 94%,    3     (reduce) the number of reported human bites by 97%.

One of the Chinese study's    4    (researcher), Xi Zhiyong, a professor at Michigan State University, has been a longtime pioneer in this field of study,    5    is running a mosquito factory in southern China. He    6    (previous) attempted to use sterilized(绝育的) male mosquitoes to mate with unaltered females In the new study,    7     (publish) by the International Journal of Science, Xi and his colleagues attempted to cut mosquito numbers even    8    (far) by limiting both males and females' ability to reproduce.

The results were so successful that they nearly    9     (wipe) out the entire female mosquito population on the two islands.

Mosquitoes pose grave threats to human health beyond just irritating bites. However, there is currently no effective vaccine or treatment     10    most mosquito-transmitted diseases, leaving controlling the insects' populations one of the most effective control methods, according to the International Journal of Science.

The Great Wall     1    (think) highly of by the human race as one of the Seven Wonders of the Ancient World. It lies in North China, with over 6,000 kilometers in     2    (long) and 7—8 meters in height.     3    (build) mainly with earth, brick and stone, the Great Wall was designed     4    (protect) people in ancient China from invaders. However, it is now     5    (universal) regarded as one of the most important tourist spots in our country. Every year, it is visited by thousands of people from all over the world. The Great Wall has become a symbol of     6     Chinese nation and its culture.

The Great Wall is wide enough for five horses or ten men to walk side     7     side. Along the wall are watch towers, where soldiers used to watch.

It was very difficult to build such a wall in ancient times without any modern     8    (machine). The condition was     9     terrible that all the work was done by hand. To be honest, the Great Wall was made not only of stone     10     earth, but of the flesh and blood of millions of men.

Lions，tigers and other animals are staying awake at night    1    （avoid）human beings，a new study finds．

Scientists have known that human activities can lead to changes in nature．Many animals may move around less or travel to far places to keep away    2    people．By being awake at night，animals can also be on guard against possible enemies and spend less time    3    （look）for food．

The latest research found even activities like farming and camping can    4    （fright）animals and cause them to become more active at night．    5    had been studied were lions in Tanzania，tigers in Nepal and monkeys in Brazil．Researchers compared    6    （careful）how much time those animals were active at night in areas of human activities，such as hunting and farming．    7    was human activities that caused an increase of about 20 percent in night time activities，even in creatures that usually sleep at night．Results    8    （publish）in the journal Science two months ago．

The new findings are    9    （usual）because no one else has looked at it in such detail before Ecologist Marlee Tucker was    10    （surprise）that any kind of human activities is enough for animals to see people as a threat．

I'm not sure     1     is more frightened, me or the female gorilla(大猩猩）that suddenly appears out of nowhere. I'm walking on a path in the forest in the Central African Republic. Unexpectedly, I'm face-to-face with the gorilla, who begins screaming at     2     top of her lungs. That makes her baby scream, and then a 400-pound male appears. He screams the

    3    (loud)of all. The noise shakes the trees as the male beats his chest and charges toward me. I quickly lower myself, ducking my head to avoid     4    (look) directly into his eyes so he doesn't feel    5    (challenge).

My name is Mireya Mayor. I'm a     6    (science)who studies animals such as apes and monkeys. I was searching     7     these three western lowland gorillas I'd been observing. No one had seen them for hours, and my colleagues and I were worried.

When the gorillas and I frightened each other, I was just glad to find     8    (they) alive. True to a gorilla's unaggressive nature, the huge animal     9    (mean)me no real harm. He was just saying: "I'm king of this forest, and here is your reminder!" Once his message was delivered, he allowed me     10     (stay)and watch.

With the     1    (develop) of industry, air pollution is getting more and more serious. In Beijing, many people suffer different kinds of illnesses because     2     air pollution.

Air pollution is caused by the following     3    (reason): about half of the problem is caused by vehicles. There are more and more cars, buses on the roads, and they give off     4    (poison) gases. 25% of air pollution is caused by factories. Another factor is the smokers. Smoking not only does harm to their health     5     to others.     6    (beside) these, about 10% of air pollution is caused by other reasons.

We should take some measures to fight     7     pollution. New fuel can be used to take     8     place of gas. We can plant more trees. If everybody realizes the     9    (important) of the environment and does something to stop pollution, the problem will     10    (solve)．

9 . Are you facing a situation that looks impossible to fix?

In 1969,the pollution was terrible along the Cuyahoga River Cleveland, Ohio. It    1    (be) unimaginable that it could ever be cleaned up. The river was so polluted that it    2    (actual) caught fire and burned. Now, years later, this river is one of    3    most outstanding（杰出的）examples of environmental cleanup.

But the river wasn’t changed in a few days    4    even a few months. It took years of work     5    (reduce) the industrial pollution and clean the water. Finally, that hard work paid off and now the water in the river is    6    (clean) than ever.

Maybe you are facing an impossible situation. Maybe you have a habit    7    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    8    (amaze) stories of instant transformation, for most of us the    9    (change) are gradual and require a lot of effort and work, like cleaning up a polluted river. Just be     10    (patience).