2. 外语
  3. Although sometimes there is______before an avalanche, there are some basic signs of avalanche danger.

Although sometimes there is______before an avalanche, there are some basic signs of avalanche danger.

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问题 Although sometimes there is______before an avalanche, there are some basic signs of avalanche danger.
选项 A、any warning
B、warning none
C、no warning
D、warning neither
答案C
解析 A noun structure must follow there is. No warning is an adjective + noun structure that correctly completes the sentence.
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