单选题{{B}}Passage Four{{/B}} Roger lived in the city of London, and his hair was always cut by the same old man. He always cut Roger’s hair as Roger liked it, and while he was doing it, the two men talked about football. One day, when Roger was sitting in his chair, and his hair was being cut as usual, the old man said to him, "Roger, I'm going to be seventy years old next month and I feel tired, so I'm going to sell my shop to a young man. He liked to cut hair for people." Roger was sorry to hear that, because he enjoyed talking to the old man, and he was also worried that his hair would not be cut as well by the new young man as it had been for so many years by his old friend. He went to the shop again the next month, and the new young man was there. He cut Roger’s hair, but he did it badly. The next month, Roger went into the shop again. The young man asked him how he would like his hair cut, and Roger answered, "Please cut it very short on the right side, but leave it as it is on the left. It must cover my ear. On top, cut all the hair away in the middle, but leave a piece at the front." The young man was very surprised when he heard this, "But sir," he said, "I can’t cut your hair like that!" "Why not?" Roger asked. "That’s how you cut it last time."

单选题We can safely conclude that a student may fail in an exam if ______.

单选题The cakes are delicious. He'd like to have ______ third one because ______ second one is rather too small. A. a; a B. the; the C. a; the D. the; a

单选题(Annoying) at the long check-out lines, the shopper began (to sigh) loudly, tap his (foot), and (glance) at his watch.A. AnnoyingB. to sighC. footD. glance

单选题______ rapidly by the body, sugar provides a quick energy source.

单选题 If you had entered the office ten minutes ago, you ______ what we were talking about just now.

单选题Our boss told me my plan was still ______ discussion.

单选题 Almost 150 years after photovoltaic (光电的) cells and wind turbines (涡轮机) were invented, they still generate only 7% of the world's electricity. Yet something remarkable is happening. From being secondary to the energy system just over a decade ago, they are now growing faster than any other energy source and their falling costs are making them competitive with fossil fuels. BP, an oil firm, expects renewables to account for half of the growth in global energy supply over the next 20 years. It is no longer far-fetched to think that the world is entering an era of clean, unlimited and cheap power. There is a problem, though. To get from here to there requires huge amounts of investment over the next few decades. Normally investors like putting their money into electricity because it offers reliable returns. Yet green energy has a dirty secret. The more it is used, the more it lowers the price of power from any source. That makes it hard to manage the transition to a carbon-free future, during which many generating technologies, clean and dirty, need to remain profitable if the lights are to stay on. Unless the market is fixed, subsidies to the industry will only grow. Policymakers are already seeing this inconvenient truth as a reason to put the brakes on renewable energy. In parts of Europe, investment in renewables is slowing as subsidies are cut back. However, the solution is not less wind and solar. It is to rethink how the world prices clean energy in order to make better use of it. At its heart, the problem is that government-supported renewable energy has been imposed on a market designed in a different era. For much of the 20th century, electricity was made and moved by vertically integrated, state-controlled monopolies. From the 1980s onwards, many of these were broken up, privatized and liberalized, so that market forces could determine where best to invest. Today only about 6% of electricity users get their power from monopolies. Yet everywhere the pressure to decarbonize power supply has brought the state creeping back into markets. This is disruptive for three reasons. The first is the subsidy system itself. The other two are inherent to the nature of wind and solar, their intermittency and their very low running costs. All three help explain why power prices are low and public subsidies are addictive.

单选题If either of you had been able to( )your anger, the fight would have been avoided.

单选题The staff in pediatrics ______ rushed whereas the geriatric ward is not busy at all.

单选题Why did Larry find a job parking cars?

单选题 Scattered around the globe are more than 100 small regions of isolated volcanic activity known to geologists as hot spots. Unlike most of the world's volcanoes, they are not always found at the boundaries of the great drifting plates that make up the earth's surface; on the contrary, many of them lie deep in the interior of a plate. Most of the hot spots move only slowly, and in some cases the movement of the plates past them has left trails of dead volcanoes. The hot spots and their volcanic trails are milestones that mark the passage of the plates... That the plates are moving is now beyond dispute. Africa and South America, for example, are moving away from each other as new material is injected into the sea floor between them. The complementary coastlines and certain geological features that seem to span the ocean are reminders of where the two continents were once joined. The relative motion of the plates carrying these continents has been constructed in detail, but the motion of one plate with respect to another cannot readily be translated into motion with respect to the earth's interior. It is not possible to determine whether both continents are moving in opposite directions or whether one continent is stationary and the other is drifting away from it. Hot spots, anchored in the deeper layers of the earth, provide the measuring instruments needed to resolve the question. From an analysis of the hot-spot population it appears that the African plate is stationary and that it has not moved during the past 30 million years. The significance of hot spots is not confined to their role as a frame of reference. It now appears that they also have an important influence on the geophysical processes that propel the plates across the globe. When a continental plate comes to rest over a hot spot, the material rising from deeper layer creates a broad dome. As the dome grows, it develops deep fissures (cracks); in at least a few cases the continent may break entirely along some of these fissures, so that the hot spot initiates the formation of a new ocean. Thus just as earlier theories have explained the mobility of the continents, so hot spots may explain their mutability (inconstancy).

单选题His description of the ghost was so ______ . that his little daughter screamed when he came to the part of killing.

单选题I got a new battery for my recorder only last week, but it seems to have ______ already.

单选题He told a story about his sister who was in a sad ______ when she was ill and had no money. A. plight B. polarization C. plague D. pigment

单选题The main idea of the first two paragraphs is that many people ______.

单选题阅读下面短文，请从短文后所给各题的4个选项（A、B、C、D）中选出1个最佳选项，并在答题卡相应位置上将该项涂黑。While you’re in a lift, waiting to reach your floor do you ever wonder who came up with the idea? Probably not.We just expect to have safe lifts

单选题It can be inferred from the text that

单选题Scientists have been struggling to find out the reason behind blushing （脸红）。Why would humans evolve（进化） a 21__________ that puts us at a social disadvantage by 22__________ us to reveal that we have c