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Giant Structures
It is an impossible task to select the most amazing wonders of the modern world since every year more______(1)constructions appear. Here are three giant structures which are worthy of our admiration______(2)they may have been surpassed by some more recent wonders.
The Petronas Twin Towers
The Petronas Towers were the tallest buildings in the world when they were completed in 1999.______(3)a height of 452 metres,the tall twin towers,like two thin pencils,dominate the city of Kuala Lumpur. At the 41st floor,the towers are______(4)by a bridge,symbolizing a gateway to the city. The American architect Cesar Pelli designed the skyscrapers.
Constructed of high-strength concrete,the building______(5)around 1,800 square metres of office space on every floor. And it has a shopping centre and a concert hall at the base.Other______(6)of this impressive building include double-decker lifts,and glass and steel sunshades.
The Millau Bridge
The Millau Bridge was opened in 2004 in the Tarn Valley,in southern France. At the ______(7)it was built,it was the world,5 highest bridge,______(8)over 340m at the highest point. The bridge is described as one of the most amazingly beautiful bridges in the world. It was built to ________ (9) Millau's congestion（拥堵）problems. The congestion was then caused by traffic passing from Paris to Barcelona in Spain. The bridge was built to with-stand the______(10) extreme seismic（地震的）and climatic conditions. Besides , it is guar- anteed for 120 years!
The Itaipu Dam
The Itaipu hydroelectric power plant is one of the largest constructions of its kind in the world.
It______(11)of a series of dams across the River Parana,______(12)forms a natural border between Brazil and Paraguay. Started in 1975 and taking 16 years to complete, the construction was carried out as a joint project between the two______(13).The dam is well-known for both its electricity output and its size. In 1995 it produced 78% of Paraguay's and 25% Of Brazil's______(14)needs. In its construction,the amount of iron and steel used was equivalent to over 300 Eiffel Towers.It is a______(15)amazing wonder of engineering.
4._________
A: designed
B: located
C: built
D: linked

Her speciality is heart surgery.
A:region
B:site
C:field
D:platform

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Food Fright
Experiments under way in several labs aim to create beneficial types of genetically modified(GM)foods,including starchier potatoes and caffeine-free coffee beans.Genetic engineers are even trying to transfer genes from a cold-water fish to make a frost-resistant tomato.A low-sugar GM strawberry now in the works might one day allow people with health problems such as diabetes to enjoy the little delicious red fruits again.GM beans and grains supercharged with protein might help people at risk of developing kwashiorkor. Kwashiorkor,a disease caused by severe lack of protein,is common in parts of the world where there are severe food shortages.
Commenting on GM foods,Jonathon Jones,a British researcher,said,"The future benefits will be enormous,and the best is yet to come."
To some people,GM foods are no different from unmodified foods."A tomato is a tomato," said Brian Sansoni,an American food manufacturer.
Critics of GM foods challenge Sansoni's opinion.They worry about the harm that GM crops might do to people,other animals,and plants.
In a recent lab study conducted at Cornell University,scientists tested pollen made by Bt corn,which makes up one-fourth of the U .S.corn crop.The scientist sprinkled the pollen onto milkweed,a plant that makes a milky juice and is the only known food source of the monarch but-terfly caterpillar. Within four days of munching on the milkweed leaves,almost half of a test group of caterpillars had died."Monarchs are considered to be a flagship species for conservation,"said Cornell researcher Linda Raynor."This is a warning bell."
Some insects that are not killed by GM foods might find themselves made stronger. How so? The insecticides used to protect most of today's crops are sprayed on the crops when needed and decay quickly in the environment.But GM plants produce a continuous level of insecticide.Insect species feeding on those crops may develop resistance to the plants and could do so in a hurry, say the critics.Insects may also develop a resistance to the insecticide Bt.
At the forum on GM food held last year in Canada,GM crops that have been made resistant to the herbicide might crossbreed with wild plants,creating"superweeds"that could take over whole fields.
So where do you stand?Should GM foods be banned in the United States,as they are in parts of Europe?Or do their benefits outweigh any of the risks they might carry?
What happens to those insects when not killed by the spray of insecticide?
A: They may lose their ability to produce offspring.
B: They may have a higher ability to adapt to the environment.
C: They move to other fields free from insecticide.
D: They never eat again those plants containing insecticide.

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Look After Your Voice
Often speakers at a meeting experience dry mouths and ask for a glass of water. You can solve the problem by activating the saliva in your mouth.First gently bite the edges of your tongue with your teeth.Or,press your entire tongue to the bottom of your mouth and hold it there until the saliva flows.Or you can imagine that you are slicing a big juicy lemon and sucking the juice.
Before you begin your talk,be kind to your voice,Avoid milk or creamy drinks which dry your throat. Keep your throat wet by drinking a little sweetened warm tea or diluted fruit juice.
If you sense that you are losing your voice,stop talking completely.In the meantime,do not even talk in a low voice.Save your voice for your health.You may feel foolish using paper to write notes,but the best thing you can do is to rest your voice.If it is necessary,perhaps you can get some advice from a professional singer.
What about drinking alcohol to wet your throat?I advice you not to touch alcohol before speaking. The problem with alcohol is that one drink gives you a little confidence.The second drink gives you even more confidence.Finally you will feel all-powerful and you will feel you can do everything,but in fact your brain and your mouth do not work together properly.Save the alcohol until after you finish speaking.
Perhaps you want to accept the advice,but you may wonder if you can ever change the habits of a lifetime .Of course you can.Goethe,who lived before indoor skating rinks or swimming pools,said,“We learn to skate in the summer and swim in the winter”.Take this message to heart and give yourself time to develop your new habits.If you are willing to change,you will soon be able to say that you will never forget these techniques because they became a part of your body.
The writer's advice about alcohol before you make a speech is to take one or two drinks so as to give yourself some confidence.
A: Right
B: Wrong
C: Not mentioned

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Some doctors think that you should drink a glass of water each morning. You should drink water before doing anything else.The temperature of the water should be similar to body temperature:not hot,not cold.Why should you drink this water?______(46).It helps clean out your kidneys.It prepares your stomach for digestion.______(47).After drinking water,the intestines can more easily take out nutrients from our food. And water helps us go to the bathroom more easily.
Scientists suggest that people take in 1,600 milliliters of water each day.______(48).If you do,your kidneys will have to work much harder to eliminate it. It's better to drink some in morning and some in afternoon.______(49).And during meals,they think water dilutes the juices produced in our stomachs.This can interfere with normal digestion.
Are you drinking enough water every day?Check the color of your urine.______(50).if your urine is very dark yellow,your probably need to drink more water. A little water each day could make you much healthier.
_________（48）
A:If it is light yellow,you are probably drinking enough
B:Water can also help your intestines work better
C:Some people think it's better to drink between meals
D:Water helps your body in many ways
E:But don't drink all of that water in one sitting
F: Water is an essential element of life

_____
　　
A.For example, the people in men's dreams are often other men, and the dreams often involve fighting.
　　B.Men and women dream about different things.
　　C.A criminal, for example, might dream about crime.
　　D.However, one thing they agree on this: If you dream that something terrible is going to occur, you shouldn't panic.
　　E.It was only in the twentieth century that people started to study dreams in a scientific way.
　　F.He thought people could learn more about themselves by thinking about their dreams.