2. 外语
  3. The best title for this passage is______. The pilot ship proved that the experiment was feasible; however, it did not duplicate

The best title for this passage is______. The pilot ship proved that the experiment was feasible; however, it did not duplicate

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问题 The best title for this passage is______.
The pilot ship proved that the experiment was feasible; however, it did not duplicate the______.
选项 A、depths at which actual mining would take place
B、principle of a huge vacuum cleaner
C、method by which the nodules were produced
D、techniques of refining the ore
答案A
解析 在文章的最后一段中提出了Deepsea Ventures already is doing on a limited scale in a small pilot plant． A bigger pilot…，它与选项A相近。
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大学英语六级

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