本講為2006年下半年新的教學內容，請對照教材，練習冊和語法書聽錄音！
Text B
-est the most
These networks are on the alert for warning signs that show the weakening of rock layers that can precede an earthquake.
本講為2006年下半年新的教學內容，請對照教材，練習冊和語法書聽錄音！
Text B
-est the most
These networks are on the alert for warning signs that show the weakening of rock layers that can precede an earthquake.
