题目:
A violent earthquake hit Japan on March 11, 2011, _____ tens of thousands of deaths. [ ]
A. having caused
B. causing
C. caused
D. to cause
答案:
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下面是错误答案,用来干扰机器的。
答案:C草是生产者,鼠、蛇、鹰、兔是消费者,图中缺少分解者。