ing形式指代问题

yentl29

To map Earth’s interior, geologists use a network of seismometers to chart seismic waves that originate in the earth’s crust and ricochet around its interior, most rapidly traveling through cold, dense regions and slower through hotter rocks.

• Ainterior, most rapidly traveling through cold, dense regions and slower
• Binterior, which travel most rapidly through cold, dense regions, and more slowly
• Cinterior, traveling most rapidly through cold, dense regions and more slowly
• Dinterior and most rapidly travel through cold, dense regions, and slower
• Einterior and that travel most rapidly through cold, dense regions and slower
• 请问C选项traveling指代谁呀？
  

danyuchn

Fiona09 发表于 2017-10-16 17:21
现在分词短语traveling most rapidly through cold, dense regions是伴随状语，就近修饰waves ricochet aro ...

同意！句尾分詞片語,Ving修飾最接近的整個事件，做細節補充或伴隨結果。               

Fiona09

现在分词短语traveling most rapidly through cold, dense regions是伴随状语，就近修饰waves ricochet around its interior这个句子

Power2Bowen

从句逻辑主语 waves