2. 外语
  3. A seed planted in the sensitive lining of an oyster begins a perpetual coating process that forms a pearl.

A seed planted in the sensitive lining of an oyster begins a perpetual coating process that forms a pearl.

admin2014-08-13  114
问题 A seed planted in the sensitive lining of an oyster begins a perpetual coating process that forms a pearl.
选项 A、total
B、annual
C、continual
D、habitual
答案C
解析 本句意思：当一粒种子被种植到了牡蛎敏感的皮层之后，就开始持续不断的包裹过程直到形成珍珠。perpetual意思是“连续不断的”，与continual(持续不断的，频繁的)意思相近。total全部的，完全的；annual年度的，每年的；habitual习惯的，惯常的。
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