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Which of the following is usually considered the cause of the waves? [br] [orig
Which of the following is usually considered the cause of the waves? [br] [orig
游客
2023-11-15
55
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问题
Which of the following is usually considered the cause of the waves? [br]
Waves are beautiful to look at, but they can destroy ships at sea, as well as houses and buildings near the shore. What causes waves? Most waves are caused by winds blowing over the surface of the water. The sun heats the earth, causing the air to rise and the winds to blow. The winds blow across the sea, pushing little waves into bigger and bigger ones.
The size of a wave depends on how strong the wind is, how long it blows, and how large the body of water is. In a small bay, big waves will never build up. But at sea the wind can build up huge, powerful waves.
A rule says that the height of a wave will usually be no more than one-tenth of the wind’s speed. In other words, when the wind is blowing at 120 kilometers per hour, must waves will be about twelve meters. Of course, some waves may combine to form huge waves that are much higher. In 1993 the United States reported the largest measured wave in history. It ruse in the Pacific Ocean to a height of thirty-four meters.
选项
A、13
B、16
C、19
D、21
答案
C
解析
此题是测试数量的除法计算题,根据文中“A rule says that the height of a wave will usually be no more than one-tenth of the wind’s speed.”可知答案是C。
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