◎ 题干
_____earth scientists understand how and why earthquakes happen, forecasts are usually inaccurate.
[     ]
A. As
B. While
C. Because
D. If
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“_____earth scientists understand how and why earthquakes happen, forecasts are usually inaccurate.[ ]A. As B. While C. BecauseD. If…”主要考查了你对  【从属连词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。