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When is an ordinary tropical storm called a hurricane? [br] [originaltext] I
When is an ordinary tropical storm called a hurricane? [br] [originaltext] I
游客
2025-01-27
18
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问题
When is an ordinary tropical storm called a hurricane? [br]
In the second half of each year, many powerful storms are born in the tropical Atlantic and Caribbean seas. Of these, only about a half a dozen generate the strong, circling winds of 75 miles per hour or more that give them hurricane status, and several usually make their way to the coast. There they cause millions of dollars of damage, and bring death to large numbers of people.
The great storms that hit the coast start as innocent circling disturbances hundreds — even thousands — of miles out to sea. As they travel aimlessly over water warmed by the summer sun, they are carried westward by the trade winds. When conditions are just right, warm, moist air flows in at the bottom of such a disturbance, moves upward through it and comes out at the top. In the process, the moisture in this warm air produces rain, and with it the heat that is converted to energy in the form of strong winds. As the heat increases, the young hurricane begins to swirl in a counter-clockwise motion.
Water, not wind, is the main source of death and destruction in a hurricane. A typical hurricane brings 6- to 12-inch downpours resulting in sudden floods. Worst of all is the powerful movement of the sea — the mountains of water moving toward the low-pressure hurricane center. The water level rises as much as 15 feet above normal as it moves toward shore.
选项
A、The low-pressure area in the center of the storm.
B、The force of waves of water.
C、The trade winds.
D、The increasing heat.
答案
D
解析
细节信息。题干:什么导致了飓风的逆时针旋风?根据原文“As the heat increases,theyoung hurricane begins to swirl in a counter-clockwise motion.”,译文为:随着热度的增加,早期的飓风开始沿逆时针方向打漩。所以选D。
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