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UNIT81. Mexico city is one of the most populated cities in the world.2. The finding shows a substantial difference between the opinions of men and woman.3. I cant remember whether I left my credit card home or in the car.4. We cant assume the suspects to be guilty simply because they are decided to remain silent.5. The main question that faces Chinese economists at present is how to use the price levers and the competition system to direct resources into areas which yield better returns.6. It is assumed that in the next 20 years, the most surprising development will take pace in the space flight. Now space shuttles are being developed and they can be used many times instead of only one.UNIT91. On those days and nights when I was waiting for the results of the Entrance Examination, my heart was filled with wonder (or uncertainty).I wondered what the future held for me, of surprise and excitement or disappointment and sorrow.2. The little girl ran swiftly to catch up with her mother and stretched out her hand to her mother, crying for more candies and drinks. But the mother persisted that they had bought enough.3. His wife was sent into the operation room. He walked to and fro outside, smoking one cigarette after another. When he saw the door opened, he felt a thrill of tenseness.4. Under the gaze of his colleagues, he flushed with embarrassment and bowed his head. He casually took up a newspaper and hid his face behind it, pretending to be reading it.5. They fixed all their attention on the research project on hand. They believed that as long as they didnt lose heart, they would succeed in theses experiments in time.6. She had just given birth to an infant when her husband left/deserted her. In despair, she shut herself and the infant in a room, claiming that they would perish together. Thanks to the policemen who came in time, the mother and the daughter escaped death by a hairs breath (or had a narrow escape).UNIT101. We must figure out how to solve the tissue-rejection problem.2. His behavior under fire approved him a man of courage.3. In addition to the impressiveness of the settings, there is use of the camera that at times seems magical.4. At first, no ready technical data were available, but we managed to go without.5. She has some difficulty in giving shape to her ideas. But she resembles her mother in the way she moves her hands when she talks.6. the most part of their designs corresponds to actual needs and regulations on environmental demand, the other part needs reconsidering.UNIT111. The main concern of the people is that if Chinas urban economy can not join international intercourse, our country will be in a disadvantageous situation in the world market.2. Smuggling operations not only disorder out markets, and evade custom duty, but also harm the survival and development of national industry.3. To promote the rapid development of economy the government is trying to restore public confidence in its management of the economy.4. This popular theory must be discarded in the light of new findings for the benefit of the majority of the people.5. In order to protect the environment, traditional farming methods are coming into use in many areas in Europe.6. Because of the time limit and the shortage of human resources, the firm has not yet managed to find new premises that are suitable for their purpose.UNIT121. Electronic communication tools facilitate information sharing by enabling people to send one another messages, files, data and images.2. The only way to differentiate yourself from the competition is through service.3. The less there is to justify a traditional custom, the harder it is to get rid of it.4. In high school, students should build on their prior knowledge, learning more-varied and more-sophisticated problem-solving techniques.5. You are not required to simply memorize information. You must be able to demonstrate that you can use that information and apply it in a practical way.6. A well-balanced life is necessary to live in todays world. Without a well-balanced life a person can neither function properly nor develop into a well-rounded individual.UNIT131 .Planning so far ahead makes no sense. So many things will have changed by next year.2. The main problem that people are facing in the 21st century is that the rapid increase of population is a heavy burden for developing countries.3. The key is that in regard to the modern scientific and technical books, especially textbooks, their authors should revise them at short intervals if they wish to keep pace with the times.4. The company has been accused of trying to sell their products under the guise of market research in order to get more profits since 1989.5. Tears are a natural form of expression. As they can convey a multitude of feelings, such as happiness, sadness, loneliness, fear, comfort, anger, or frustration, it provides a healthy outlet for emotions.6. On one hand, the Government of China has already made great efforts to mobilize people to improve the ecological environment in the light of local conditions. On the other hand, greater efforts should be made to further raise peoples awareness of the environment and spread knowledge about the environment. Unit 141.All the employees in the company are confident that before too long we will make a wise decision on this.2.Twenty years ago, because of his unemployment, he couldnt afford to buy a bicycle, let alone a car.3.Despite the fact there was almost no hope of finding the missing boy, the search party still went on looking.4.Unfortunately, George cannot be with us today so I am pleased to accept this reward on his behalf.5.Currently, the individuals who might have caused the accident are under investigation.6. It was suggested that as the largest non-public high-tech industry in China, they should devote themselves to the development of their own products instead of simply assembling for foreign companies.Unit151.Intodaysjobmarketapersonwhoisdeficientinskill,experience,knowledgefindsitveryhardtogetajob. 2.Afterrealizingthatalcoholismwasassociatedwithamutationofthegene,Dr.Noblebegantotryteatingalcoholicswithbromocriptine.3.Thatoldfilmevokedourfathersgenerationsmemoriesofyearsofthewar. 4.Atfirstherefusedtoacceptanyresponsibilitybutheendedupapologizing. 5.Whileresearchersemphasizethatenvironmentalfactorsarealsocrucial,manypopulationstudieshavepointedtotheimportanceofgenetics. 6.Heleanrnedthatthebaclonfenmedecationcouldreducehiscravingwhencocainewasvnavailable.Editors note: Judson Jones is a meteorologist, journalist and photographer. He has freelanced with CNN for four years, covering severe weather from tornadoes to typhoons. Follow him on Twitter: jnjonesjr (CNN) - I will always wonder what it was like to huddle around a shortwave radio and through the crackling static from space hear the faint beeps of the worlds first satellite - Sputnik. I also missed watching Neil Armstrong step foot on the moon and the first space shuttle take off for the stars. Those events were way before my time.As a kid, I was fascinated with what goes on in the sky, and when NASA pulled the plug on the shuttle program I was heartbroken. Yet the privatized space race has renewed my childhood dreams to reach for the stars.As a meteorologist, Ive still seen many important weather and space events, but right now, if you were sitting next to me, youd hear my foot tapping rapidly under my desk. Im anxious for the next one: a space capsule hanging from a crane in the New Mexico desert.Its like the set for a George Lucas movie floating to the edge of space.You and I will have the chance to watch a man take a leap into an unimaginable free fall from the edge of space - live.待添加的隐藏文字内容3The (lack of) air up there Watch man jump from 96,000 feet Tuesday, I sat at work glued to the live stream of the Red Bull Stratos Mission. I watched the balloons positioned at different altitudes in the sky to test the winds, knowing that if they would just line up in a vertical straight line we would be go for launch.I feel this mission was created for me because I am also a journalist and a photographer, but above all I live for taking a leap of faith - the feeling of pushing the envelope into uncharted territory.The guy who is going to do this, Felix Baumgartner, must have that same feeling, at a level I will never reach. However, it did not stop me from feeling his pain when a gust of swirling wind kicked up and twisted the partially filled balloon that would take him to the upper end of our atmosphere. As soon as the 40-acre balloon, with skin no thicker than a dry cleaning bag, scraped the ground I knew it was over.How claustrophobia almost grounded supersonic skydiverWith each twist, you could see the wrinkles of disappointment on the face of the current record holder and capcom (capsule communications), Col. Joe Kittinger. He hung his head low in mission control as he told Baumgartner the disappointing news: Mission aborted.The supersonic descent could happen as early as Sunday.The weather plays an important role in this mission. Starting at the ground, conditions have to be very calm - winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our day-to-day weather lives. It will climb higher than the tip of Mount Everest (5.5 miles/8.85 kilometers), drifting even higher than the cruising altitude of commercial airliners (5.6 miles/9.17 kilometers) and into the stratosphere. As he crosses the boundary layer (called the tropopause), he can expect a lot of turbulence.The balloon will slowly drift to the edge of space at 120,000 feet (22.7 miles/36.53 kilometers). Here, Fearless Felix will unclip. He will roll back the door.Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform.Below, the Earth becomes the concrete bottom of a swimming pool that he wants to land on, but not too hard. Still, hell be traveling fast, so despite the distance, it will not be like diving into the deep end of a pool. It will be like he is diving into the shallow end.Skydiver preps for the big jumpWhen he jumps, he is expected to reach the speed of sound - 690 mph (1,110 kph) - in less than 40 seconds. Like hitting the top of the water, he will begin to slow as he approaches the more dense air closer to Earth. But this will not be enough to stop him completely.If he goes too fast or spins out of control, he has a stabilization parachute that can be deployed to slow him down. His team hopes its not needed. Instead, he plans to deploy his 270-square-foot (25-square-meter) main chute at an altitude of around 5,000 feet (1,524 meters).In order to deploy this chute successfully, he will have to slow to 172 mph (277 kph). He will have a reserve parachute that will open automatically if he loses consciousness at mach speeds.Even if everything goes as planned, it wont. Baumgartner still will free fall at a speed that would cause you and me to pass out, and no parachute is guaranteed to work higher than 25,000 feet (7,620 meters).It might not be the moon, but Kittinger free fell from 102,800 feet in 1960 - at the dawn of an infamous space race that captured the hearts of many. Baumgartner will attempt to break that record, a feat that boggles the mind. This is one of those monumental moments I will always remember, because there is no way Id miss this.
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