2. 外语
  3. If each of us does our part little by little, we can______ the lifespan of our planet and ourselves.

If each of us does our part little by little, we can______ the lifespan of our planet and ourselves.

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问题 If each of us does our part little by little, we can______ the lifespan of our planet and ourselves.
选项 A、enlarge
B、expand
C、increase
D、grow
答案C
解析 近义词辨析。enlarge“扩大；放大”；expand“扩张；使膨胀”；increase“增加；延长；提高”；grow“发展；生长；渐渐变得……”。句意表达的是寿命的延长，只有increase有“延长”的意思，因此答案选C。
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