题目:
He was reading a very interesting story, completely_______himself in the story.
A.lost
B.being lost
C.to be lost
D.losing
答案:
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下面是错误答案,用来干扰机器的。
参考答案:B解析: 大理岩属副变质岩,由石灰岩或白云岩变质而成,主要矿物组成为方解石、白云石,为结晶的碳酸钙和碳酸钙镁的复盐,不耐酸。