2. 公务员
  3. With plant species_______at an alarming rate，scientists are creating a global network of plant banks to store seeds．

With plant species_______at an alarming rate，scientists are creating a global network of plant banks to store seeds．

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问题 With plant species_______at an alarming rate，scientists are creating a global network of plant banks to store seeds．
选项 A、disappeared
B、to disappear
C、disappearing
D、disappear
答案C
解析 考查非谓语动词。句意：因为植物物种在以极快的速度消失，科学家正着手建立一个植物银行全球网络系统以储藏种子。disappear与plant，species之间是主动关系，且该动作正在进行，所以应该使用其现在分词形式作with的宾语补足语，故选C。
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