Nowadays, scientists still have not made huge progress on the research of earthq

游客2023-09-17  22

问题 Nowadays, scientists still have not made huge progress on the research of earthquake because they have not fully understood what cause earthquakes. [br] In earthquake, long wave is the main source of damage because it causes the shake of ______.

选项

答案 the foundations of manmade structures

解析 根据long wave定位到第四个小标题下首段末句Surface waves...because they cause the most intense vibrations.此处需填入名词性成分。接下来在第四个小标题下的第2段第2句给出了原因:This generally causes the worst damage...rocks the foundations of manmade structures。题干中的is the main source of damage与原文中的causes the worst damage属同义转述;题于中的shake(名词)“摇动,震动”与原文中的rock(动词)同义。所以rocks的宾语为本题答案。
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