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第三篇 Florida Hit by Cold Air Mass In January, 2003, the eastern two thirds of the United States was at the mercy of a bitterly cold air mass that has endangered Florida’s citrus trees, choked 3 northern harbors with ice and leftbewildered residents of North Carolina’s Outer Banks digging out of up to a foot of snow. The ice chill deepened as temperatures fell to the single digits in most of the South, with an unfamiliar dip below the freezing mark, as far South as parts of interior South Florida. Temperatures in Florida plunged, with West Palm Beach dropping to a record low of 2 degrees. "We couldn’t believe how cold it was," said Martin King, who arrived this week in Orlando from England "We brought shorts, T-shirt, and I had to go out and buy another coat." The temperature plunge posed a threat to Florida’s USS 9.1 billion-a-year citrus crop, more of which is still on the trees. Growers were hurrying to harvest as much of the fruit as possible before it was damaged by cold. "Time is of the essence in getting fruit to the plant," said Tom Rogers, a citrus grower who expected to see damage to oranges and grapefruit at that time. In Florida, Governor Jeb Bush signed an emergency order to eliminate the weight limit on trucks so citrus growers could get as much fruit to market as possible. Casey Pace, a spokeswoman for Florida Citrus Mutual, said growers had sprayed trees with sprinklers, which created a layer of ice and helped maintain a temperature near freezing. Citrus trees are considered in danger of damage if the temperature drops below minus 2 degrees Celsius for four hours or more. Snow ranging from a dusting to up to 30 centimeters blanketed the Carolinas, Tennessee and parts of Virginia. citrus n. 柠檬，柑橘；柑橘属果树 bewilder v. 使迷惑；使为难；……弄糊涂 sprinklern. 洒水器；洒水手 Celsius adj.摄氏的 shorts n. 宽松运动裤；男式短衬裤 Which of the following statements is not meant in the first two paragraphs
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已知甲公司近三年的相关资料如下： 单位：万元 2004年 2005年 2006年 净利润 2400 2700 营业收入 18000 20000 年末总资产 8000 9000 10000 年末股东权益 4500 5400 6000 普通股平均股数(万股) 550 650 要求： (1)填写下表(在表中列出计算过程)： 200年 2006年 平均总资产(万元) 平均股东权益(万元) (2) 计算2005年和2006年的营业净利率、总资产周转率、权益乘数和平均每股净资产 (涉及到资产负债表中数据使用平均数计算)； (3) 用差额分析法依次分析营业净利率、总资产周转率、权益乘数和平均每股净资产变动对每股收益的影响。
第一节 单项填空 从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。 How are you feeling now Shall I send ______ the doctor
设有课程表(课程号，课程名，学分，先修课程号)，已知某应用程序需要列出“数据库原理”课程的一门先修课程，查询结果要求输出(课程名，学分，先修课名称，先修课学分)，可以用______连接操作在一个查询中实现此功能。
阅读下面这篇短文，短文后列出了7个句子，清根据短文的内容对每个句子作出判断。如果该句提供的是正确信息，请选择A项；如果该句提供的是错误信息，请选择B项；如果该句的信息文章中没有提及，请选择C项。 Plants in Desert Only special plants can survive the terrible climate of a desert, for these are regions when the annual range of the soil temperature can be over 75℃. Furthermore, during the summer there are few clouds in the sky to protect plans from the sun’ s ray. Another problem is the fact that there are frequently strong winds that drive small, sharp particles of sand into the plants,earing and damaging them. The most difficult probiem for all forms of plant life, however, is the fact that the entire annual rainfall occurs during a few days or weeks in spring. Grasses and flowers in desert survive from one year to the next by existing through the long, hot, dry season in the form of seeds. These seeds remain inactive unless the fight amount of’rain falls. If no rain falls, or if insufficient rain falls, they wait until the next year, or even still the next. Another factor that helps these plants to survive is the fact that their life cycles are short. By the time the water from the spring rains disappears — just a few weeks after it falls — such plants no longer need any. The perennials (多年生植物) have special features that enable them to survive as plants for several years. Thus, nearly all desert perennials have extensive root systems below ground and a small shoot system above ground. The large root network enables the plant to absorb as much water as possible in short time. The small shoot system, on the other hand, considerably limits water loss by evaporation. Another feature of many perennials is that after the rainy season they 10se their leaves in preparation for the long, dry season, just as trees in wetter climates lose theirs in preparation for the winter. This reduces their water loss by evaporation (蒸发) duing the dry season. Then, in next rainy season, they come fully alive once more, and grow new branches, leaves and flowers, just as the grasses and flowers in desert do. Grasses and flowers in the desert whose life cycles are short shows their ability to adapt to the quick disappearance of rainwater there after it falls in spring.
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