单选题 Biological wizardry of a different sort is responsible for the ruggedness of sea-ear shells, which under high-powered microscopes resemble ______ constructed stone walls.
A. reversibly B. elaborately C. spontaneously D. concurrently

【正确答案】 B
【答案解析】[解析] 本题考查在4个选项中哪一个副词能够与句中充当形容词修饰语的constructed(意为“建造的”)形成搭配,以符合句子的逻辑意义。A项:reversibly意为“颠倒地”;C项spontaneously意为“自发地,自然地”;D项concurrently意为“同时地,和谐一致地”;三者任何一个与constructed搭配,都不符合句意。B项elaborately的意思是“精心地”,与constructed搭配;构成“精心建造的”,恰好符合句子的逻辑意义。全句的意思是:“鲍鱼壳的粗糙是由生物的不同的神奇而形成的,在高倍显微镜下就像精心建造的石墙一般。”