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  3. Nowadays, scientists still have not made huge progress on the research of earthquake because they have not fully understood what

Nowadays, scientists still have not made huge progress on the research of earthquake because they have not fully understood what

admin2009-04-23  65
问题 Nowadays, scientists still have not made huge progress on the research of earthquake because they have not fully understood what cause earthquakes.
Thousands of earthquakes take place every day, but most of them are very gentle.
选项 A、Y
B、N
C、NG
答案A
解析 根据题意和题干中的every day定位到第一个小标题下末段后两句That’s about 8000 a day，or one every 11 seconds! The vast majority of these 3 million quakes are extremely weak．题干中的Thousands of和原文中的8000语义相近；题干中的very gentle和原文中的extremely weak属同义转述，故题干与原文表述一致。
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