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  3. President Xi Jinping highlighted the importance of improvement of ecology and...

President Xi Jinping highlighted the importance of improvement of ecology and...

admin2020-12-24  6
问题 President Xi Jinping highlighted the importance of improvement of ecology and environmental protection as he __________ greater awareness of their benefits.
选项 A.call on
B.call in
C.call up
D.call for
答案D
解析考查动词短语辨析。call on“请求，要求(某人做某事)”；call in“打电话来，叫来”；call up“给……打电话”：call for后面接表示事物的名词时，表示“需要，要求”。句意为“当习近平主席要求提高对改善生态及环境保护的益处的意识时，强调了它们的重要性”。故选D。
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