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Happiness will never come to those ______ (不珍惜他们已经拥有的一切).
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W: There is nothing I like more than a good mystery novel when I’ve got some spare time.M: I likd to read too. But I prefer non -fiction: history, social commentary and staff like that. What does the man mean（）
After the violent earthquake that shook Los Angeles in 1994, earthquake scientists had good news to report: The damage and death toll could have been much worse.More than 60 people died in this earthquake. (26) comparison, an earthquake of similar intensity that shook America in 1988 (27) 25,000 victims. (28) and deaths were relatively less in Los Angeles because the quake occurred at 4:31 a.m. on a holiday, (29) traffic was light on the city’s highways. In addition, changes made to the construction codes in Los Angeles during the last 20 years have (30) the city’s buildings and highways, making them more (31) to quakes.Despite the good news, civil engineers aren’t (32) on their successes. (33) to their drawing boards are blueprints for improved quake-resistant buildings. The new designs should (34) even greater security to cities where earthquakes often take place.In the past, making structures quake-resistant meant final yet (35) materials, such as steel and wood, which (36) without breaking. Later, people tried to lift a building off its foundation, and (37) rubber and steel between the building and (38) foundation to reduce the (39) of ground vibrations. The most recent designs give buildings (40) as well as concrete and steel supports. Called smart buildings, the structures (41) like living organisms to an earthquake’s vibrations. When the ground shakes and the building (42) forward, the computer would force the building to (43) in the opposite direction.The new smart structures could be very (44) to build. However, they would (45) many lives and would be less likely to be damaged during earthquakes. 44（）
Mothers are increasingly fed up with jobs that do not allow them to spend enough time with their children. So instead, they are starting their own business. The number of women working for themselves has increased by nearly 20% since 2000, according to official figures, and now tops a million. And an opinion poll commissioned by the government shows that the most significant factor in the increase is a desire among women for a better balance between work and family life. The biggest motivation for doing it alone—according to 70% of those polled--was to be able to work more flexibly. Three out of four said that their work and family life balance was better when they ran their own business.Tanya Rostron, a mum of two children, employs 11 people at her firm, which supplies water coolers throughout the East Midlands. She once worked as head of marketing in a major leisure company. When she got married and had children, she was determined to escape the workplace. She set up a company so she could spend time with her new baby daughter Frankie. She gives her staff time to look after their kids too. Most of her team are parents and they back up her claim. Why are mothers fed up with their jobs（）
Oceanography has always been regarded as the science of our oceans mixing geology, biology, chemistry, and physics to unveil the secrets of our seas. Scientists once defined oceanography as "the application of all sciences to the study of the sea". Before the nineteenth century, very few scientists showed an interest in the sea. Newton, a well-known scientist, explored some aspects of it theoretically in his works at one time, but later he was unwilling to have a further study on it.The sea was remote for the majority of the people, and except early travelers who traveled among continents or others who earned a living by undersea living creatures, it was not necessary to raise questions about it, let alone to ask what lay beneath the surface. Just when Europe and America proposed to lay a telegraph cable between them, the question "what is at the bottom of the seas" had to be answered for the first time with some commercial links. The engineers had to observe and measure the depth profile of the route to estimate the length of the cable to be produced.Thanks to Maury, the US Navy, the Atlantic Telegraph Company acquired information on this matter in 1853. In the 1840s, Maury had been assigned to encourage voyages during which soundings (测声) could be used to investigate the depths of the North Atlantic and Pacific Oceans as well. Later, some of his findings drew much attention and gained popularity in his book The Physical Geography of the Sea. The cable was laid, but the connection was not made permanent and reliable until 1866. At the early attempts, the cable failed and when it was taken out for repairs, it was found to be covered with living growths. The fact once refuted scientific argument at that time that there was no life in the deeper parts of the sea.Oceanography was gradually developed in next few years. In 1872 Thomson led a scientific expedition(考查) lasting for four years and brought back thousands of samples from the sea. Scientists were devoted to the classification and analysis of these samples for years and produced a five-volume report with the last volume published in 1895. "Refuted" ( Line 8, Para. 3) in the passage probably means "（）".
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