The Chisos Mountains in Big Bend National Park in Texas were created by volcanic eruption that occurred____.
问题描述：
The Chisos Mountains in Big Bend National Park in Texas were created by volcanic eruption that occurred____.
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
选 B 德克萨斯州的 大弯曲国家公园 里的 Chisos Mountains 是恐龙在这个地区出没的时代由火山喷发造成的.