题目内容
The largest earthquake (magnitude里氏9.5 ) of the 20th century happened on May 22, 1960 off the coast of South Central Chile.It generated (生成) one of the most destructive Pacific-wide tsunamis (海啸). Near thegenerating area, both the earthquake and the tsunami were very much destructive, particularly in the coastal area from Concepcion to the south end of Isla Chiloe. The largest tsunami damage occurred at Isla Chiloe-the coastal area closest to the epicenter(震中). Huge tsunami waves measuring as high as 25 meters arrived within 10 to 15 minutes after the earthquake, killing at least two hundred people, sinking all the boats, and flooding half a kilometer inland.There was large damage and loss of life at Concepcion, Chile’s top industrial city. Near the city of Valdivia, the earthquake and following aftershocks generated landslides which killed 18 people. At the port city of Valparaiso, a city of 200,000, many buildings collapsed. A total of 130,000 houses were destroyed--one in every three in the earthquake zone and nearly 2,000,000 people were left homeless.Total damage losses, including to agriculture and to industry, were estimated(估计) to be over a half billion dollars. The total number of deaths related with both the tsunami and the earthquake was never found accurately for the region. Estimates of deaths reached between 490 to 5,7002 with no distinction(差别) as to how many deaths were caused by the earthquake and how many were caused by the tsunami. However, it is believed that most of the deaths in Chile were caused by the tsunami. What can we learn about the tsunami waves generated by the earthquake（）
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"She was married to an officer in India long ago and she had a life of physical adventure as exciting as her poetry. Her husband could cross rivers, using crocodiles (鳄鱼) as stepping stones. He died when she was only thirty-nine. Unwilling to exist without him, she took her life, leaving a son in England."I stared at the paper, (36) reading, couldn’t help thinking.Crocodiles are lazy animals as a rule, but they can (37) like lightning when they want to. And they don’t mind hurrying (38) they’re hungry. There used to be lots in Indian rivers, living on fish mostly, but what’s a little fish (39) a fifteen-toot crocodile They are people, fisherman or anyone else delicious enough to get too near; women doing the (40) or children playing at the water’s (41) . A hungry crocodile’s mouth (42) over a meal with a sound like a gunshot. A big fellow can (43) in a man in two bites.That woman’s husband crossed rivers (44) from one crocodile’s back to the next. I believe it. It had to be done (45) before the creature could see what was happening. It wasn’t (46) a brave, active man, and no doubt he improved with practice. He could never look (47) while crossing.The wife used to watch him—I felt (48) of that. She lived (49) the adventure with the (50) excitement of it all. Their real life was with tigers, snakes... It’s no wonder she wrote (51) poetry.Then he (52) . I imagined how she felt. Was there another man (53) him in India, in the world She was still young, hardly a sitting-room widow (寡妇). "I must (54) , too." She said to herself. So she did what she felt she had to do. A (55) probably, to her head. But her young son, their son Was her love for him nothing compared to her husband Well, what do you think 48().
In the dining room of my grandfather’ s house stood his heavy clock. Meals in the dining room were a (21) for our four generations to become one. My grandfather’ s clock always stood like a trusted old family friend, (22) us playing jokes and tellingstories, which was already a (23) of our life.When I was a child, the old clock interested me. I watched and listened to it during (24) I was surprised how at (25) times of the day, the clock would strike three times, six times or more, with a wonderful great (26) that echoed throughout the house. The clock chimed year after year, a part of my (27) , a part of my heart.Even more (28) to me was my grandfather’s special action each day. He meticulously (29) the clock with a special key each day. The key was magic to me. It (30) our family’ s magnificent clock ticking and striking all year round. 25（）
"She was married to an officer in India long ago and she had a life of physical adventure as exciting as her poetry. Her husband could cross rivers, using crocodiles (鳄鱼) as stepping stones. He died when she was only thirty-nine. Unwilling to exist without him, she took her life, leaving a son in England."I stared at the paper, (36) reading, couldn’t help thinking.Crocodiles are lazy animals as a rule, but they can (37) like lightning when they want to. And they don’t mind hurrying (38) they’re hungry. There used to be lots in Indian rivers, living on fish mostly, but what’s a little fish (39) a fifteen-toot crocodile They are people, fisherman or anyone else delicious enough to get too near; women doing the (40) or children playing at the water’s (41) . A hungry crocodile’s mouth (42) over a meal with a sound like a gunshot. A big fellow can (43) in a man in two bites.That woman’s husband crossed rivers (44) from one crocodile’s back to the next. I believe it. It had to be done (45) before the creature could see what was happening. It wasn’t (46) a brave, active man, and no doubt he improved with practice. He could never look (47) while crossing.The wife used to watch him—I felt (48) of that. She lived (49) the adventure with the (50) excitement of it all. Their real life was with tigers, snakes... It’s no wonder she wrote (51) poetry.Then he (52) . I imagined how she felt. Was there another man (53) him in India, in the world She was still young, hardly a sitting-room widow (寡妇). "I must (54) , too." She said to herself. So she did what she felt she had to do. A (55) probably, to her head. But her young son, their son Was her love for him nothing compared to her husband Well, what do you think 44().
假设磁盘上每个磁道划分成9个物理块，每块存放1个逻辑记录。逻辑记录R0，R1，…，R8存放在同一个磁道上，记录的安排顺序如表1-7所示。 表1—7记录的安排顺序 物理块 0 1 2 3 4 5 6 7 8 逻辑记录 R0 R1 R2 R3 R4 R5 R6 R7 R8 假定磁盘旋转一圈的时间为27ms，磁头当前处在R0的开始处。若系统顺序处理这些记录，使用单缓冲区，每个记录处理时间为3ms，则处理这9个记录的最长时间为 (11) ；若对信息存储进行优化分布后，处理9个记录的最少时间为 (12) 。
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