【評論主題】During most of their lives, surge glaciers behave like normal glaciers, traveling perhaps only a cou

【評論內容】

at intervals of 10 to 100 years, 

10-100 years為時間單位，則應選periods (週期)，可能誤選成(B) speeds 速度，應注意速度為距離/時間，因此不能選(B)

【評論主題】During most of their lives, surge glaciers behave like normal glaciers, traveling perhaps only a cou

【評論內容】

at intervals of 10 to 100 years, 

10-100 years為時間單位，則應選periods (週期)，可能誤選成(B) speeds 速度，應注意速度為距離/時間，因此不能選(B)

【評論主題】During most of their lives, surge glaciers behave like normal glaciers, traveling perhaps only a cou

【評論內容】

at intervals of 10 to 100 years, 

10-100 years為時間單位，則應選periods (週期)，可能誤選成(B) speeds 速度，應注意速度為距離/時間，因此不能選(B)

【評論主題】During most of their lives, surge glaciers behave like normal glaciers, traveling perhaps only a cou

【評論內容】

at intervals of 10 to 100 years, 

10-100 years為時間單位，則應選periods (週期)，可能誤選成(B) speeds 速度，應注意速度為距離/時間，因此不能選(B)

【評論主題】The asphalt at La Brea seeps to the surface, especially in the summer, and forms shallow puddles tha

【評論內容】

asphalt (瀝青) seeps (滲出) 到surface (表面)，form(形成) shallow (淺的) puddles ([不透水的]坑洞)，been concealed by leaves and dust (葉子與塵土)。

因此可知，四個選項中跟坑洞有關的，被遮蓋被掩藏，選(B)；其實若直接看選項，也能從conceal與cover之間的關聯性推斷出答案應選(B)。