問題詳情
請依下文回答第 19 題至第 22 題For years, scientists struggled to explain the mysterious disappearances of ships and low-flying aircraft.Many speculated that bad weather or machine malfunction were responsible. But satellites have recentlyidentified enormous waves in the oceans and the data proves that they are more common than once thought.Scientists now suspect that the disappearances may have been caused by these “rogue waves.”So, how do rogue waves form? Oceanographers once thought that rogues were the result of manysmaller waves joining together to form a giant wave. But in analyzing the recent satellite images, scientistshave noted that rogues appear to form most often in places where waves of different strengths come togetherfrom different directions. At the southernmost tip of Africa, for example, where the Atlantic and IndianOceans meet, it is quite common for waves to crash into each other. This theory may explain the occurrenceof rogue waves in similar locations around the globe (such as at the tip of South America). However, it doesnot explain why the waves form in places where there are no fast-moving ocean currents—such as in theNorth Sea. Though scientists are beginning to understand more about rogue waves, there is still a lot to learn.
【題組】19 What is the passage mainly about?
(A) The formation of the global ocean currents.
(B) The latest scientific discovery of rogue waves.
(C) Unexplained phenomena around the globe.
(D) Mysterious disappearances of ships and aircraft.
參考答案
答案：B
難度：適中0.620968
統計：A(9),B(77),C(16),D(21),E(0)