40.Her dress was very short and she was a bit embarrassed ()it.
A. about
B. to
C. on
D. for
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1. Passage Twenty-NineHow can we get rid of garbage (垃圾)? Do we have enough energy sources to meet our future energy needs? These are two important questions that many people are asking today.Some people think that man might be able to solve both problems at the same time.They suggest using garbage as an energy source, and at the same time it can save the land to hold garbage.For a long time, people buried garbage or dumped (倾倒)it on empty land.Now, empty land is scarce.But more and more garbage is produced each year.However, garbage can be a good fuel to use.The things in garbage do not look like coal, petroleum, or natural gas; but they are chemically similar to these fossil fuels.As we use up our fossil-fuel supplies, we might be able to use garbage as an energy source.Burning garbage is not a new idea.Some cities in Europe and the United States have been burning garbage for years.The heat that is produced by burning garbage is used to boil water.The steam that is produced is used to make electricity or to heat nearby buildings.In Paris, France, some power plants burn almost 2 million metric tons of the city’s garbage each year.The amount of energy produced is about the same as would be produced by burning almost a half million barrels of oil.Our fossil fuel supplies are limited.Burning garbage might be one kind of energy source that we can use to help meet our energy needs.This method could also reduce the amount of garbage piling up on the earth.What two problems can man solve by burning garbage?
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4. Passage NineteenA 3-year-old boy who was lost in the woods for two days is now safe at home.But Casey Hathaway told his rescuers that he was not alone in the rainy, freezing cold woods.He said he was with a friend——a bear.The child went missing on January 22 while playing with friends at his grandmother’s house in the southern state of North Carolina.When the other children returned to the house and Casey did not, the family searched the area for almost an hour before calling the police.Police formed a search and rescue team to look for the young boy in the nearby woods.But two days went by and still——no Casey.The woods of North Carolina are home to many black bears, like this one.It seems one of them helped a little boy while he was lost in the woods.Then on January 24, someone called the police saying they heard a child crying in the woods.Police followed up on the information and found Casey at about 9:30 that night.They pulled him out of some briar (荆棘).He was in good health.Police Officer Chip Hughes said that Casey did not say how he was able to survive in the woods for two days in the cloud, rainy weather, but that “he did say he had a friend in the woods that was a bear that was with him.”Hundreds of people helped in the search and rescue efforts, including some 600 volunteers, federal police and members of the military.Hughes told reporters that at no point did he think Casey had been kidnapped (绑架).Doctors at Carolina East Medical Center treated Casey for minor injuries.He was then released to his family on January 25.When found in the woods, Casey was ().
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16.We take our skin for granted until it is burned ()repair.
A. beyond
B. for
C. without
D. under
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42.Such a problem exists because adequate measures for preventing it ()taken in the past.
A. were not
B. had not
C. was not
D. had not been
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42.After the guests left, she spent half an hour ()the sitting-room.
A. ordering
B. tidying up
C. arranging
D. clearing away
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45.She gave us food and clothes and asked for nothing in return, which made us very grateful.
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44.The farmers were gathering crops in the field when they heard the drowning girl calling for help.
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50.The output of new energy vehicle this year is ()last year.
A. as much as twice
B. as twice much as
C. twice as much as
D. twice so much as
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5. Passage SixteenJustin was always prepared.His motto was “Never throw anything out, you never know when it might come in handy.” His bedroom was so full of flat bicycle tires, bent tennis rackets, deflated basketballs, and games with missing pieces that you could barely get in the door.His parents pleaded him to clean out his room.“What use is a fish tank with a hole in the bottom?” his father asked.But Justin simply smiled and repeated his motto, “Never throw anything out, you never know when it might come in handy.”When Justin was away from home, he always carried his blue backpack.He liked to think of it as a smaller version of his bedroom——a place to store the many objects that he collected.It was so worn and stretched that it hardly resembled a backpack anymore.It was full of the kind of things that seemed unimportant, but when used with a little imagination, might come in handy.Justin had earned a reputation for figuring things out and getting people out of otherwise hopeless situations.Many of his classmates and neighbors sought him out when they needed help with a problem.On the first day of school, his friend Kenny, came looking for Justin.“Do you think you have something in your bag that could help me remember my locker combination?” he asked.“I lost the paper it was written on.I have science class in two minutes and if I’m late on the first day it’ll make me look bad for the rest of the year.” Kenny looked genuinely worried.“Relax,” Justin said, taking his backpack off and opened it.“Remember how you borrowed my notebook in homeroom to write the code down? Well, I know how we can recover what you wrote.”He took the notebook and a soft lead pencil out of his bag.The page that Kenny had written on had left faint indentations (旧凹痕)on another page in the notebook.Justin held the pencil on its side and rubbed it lightly over the indentations.Slowly but surely the numbers of the locker combination appeared in white, set off by the gray pencil rubbings.“That’s amazing!” Kenny said.“I owe you one.” And he dashed off to open his locker.The author’s purpose in writing this story is to ().
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