The best title for this passage is______. The description of the structure of the nodules is reminiscent(使人想起) of the method us

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问题 The best title for this passage is______.
The description of the structure of the nodules is reminiscent(使人想起) of the method used to

选项 A、manufacture synthetic diamonds
B、create cultured pearls
C、reverse the electrochemical process
D、pan gold

答案B

解析 根据文章倒数第二段可以看出,鹅卵石、鲨鱼的牙齿以及鲸的耳骨在矿砂里运动,就像养殖珍珠一样需要在蚌里运动,所以B为正确答案。
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