It is true that there are still abundant reserves of metals which have not yet b

游客2023-11-16 11

问题 It is true that there are still abundant reserves of metals which have not yet been______, but it is necessary to take steps to ensure that alternative materials are substituted whenever possible.

选项 A、utilized
B、mobilized
C、acquired
D、cultivated

答案 A

解析词汇题。utilize表示“利用”的意思；mobilize意为“动员”，如：Our country’s in great danger；wemust mobilize the whole nation．我们正处于严重的危险之中，我们必须把全国人民动员起来。acquire意为“获得”，如：She acquired knowledge of the English by careful study．她认真学习而精通英语。但acquire knowledge (education)，不说acquire reserves；cultivate意为“培植”、“培育”。

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