2. 外语
  3. Dozens of scientific groups all over the world have been______the goal of a practical and economic way to use sunlight to split

Dozens of scientific groups all over the world have been______the goal of a practical and economic way to use sunlight to split

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问题 Dozens of scientific groups all over the world have been______the goal of a practical and economic way to use sunlight to split water molecules.
选项 A、pursuing
B、chasing
C、reaching
D、winning
答案A
解析 A项pursuing意为“追求，寻求”，与goal搭配；B项chasing意为“追逐，追赶”；C项reaching意为“达到”；D项winning意为“赢得”。
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