2. 外语
  3. The Chisos Mountains in Big Bend National Park in Texas were created by volcanic eruptions that occurred ______.

The Chisos Mountains in Big Bend National Park in Texas were created by volcanic eruptions that occurred ______.

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问题 The Chisos Mountains in Big Bend National Park in Texas were created by volcanic eruptions that occurred ______.
选项 A、the area in which dinosaurs roamed
B、when dinosaurs roamed the area
C、did dinosaurs roam the area
D、dinosaurs roaming the area
答案B
解析 本题空缺部分应该在句中做状语，选项B符合。句意：……在恐龙统治该地区时代发生的火山爆发。
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