is based upon science　
34.In the third paragraph, the main idea is developed by means of 　　.
　　reasons 　　　　　cause and effect　ntrast　　　　　　inciden ts 　　　　
35.From the passage, one could most safely conclude that the author sees danger in 　　.
　　nonconformism　
　　iform thinking　
　　imperfection　
　　lower standards of living　

Passage4
　　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.
　　The average life of a hurricane is only about nine days, but it contains almost more power than we can imagine. The energy in the heat released by a hurricane's rainfall in a single day would satisfy the entire electrical needs of the United States for more than six months. 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.
36.This passage mainly describes 　　.
　　0the growth of hurricane　
　　\s0the damage caused by hurricanes　
　　\s0the average life of a hurricane　　　\s1All above　
37.A hurricane status refers to a strong, whirling wind of 　　.
　　half a dozen miles per hour　
　　more than 75 miles per hour　
　　 miles per hour or more　
　　75 miles per hour　
38.According to the passage, the growth of a hurricane goes through the following steps: 　　.
　　moisture — trade winds — strong wind — rain — disturbance — heat — air flows　
　　sturbance — trade winds — air flows — moisture — rain — heat — strong wind　
　　disturbance — moisture — trade wind — strong wind — air flows — heat — rain　
　　moisture — trade wind — strong wind — heat — air flows — disturbance — rain　
39.According to the passage, the energy in the heat released by a hurricane's rainfall in a single day would 　　.
　　supply water to the United States for more than six months