Mei Li:
The Riau Islands are a province of which country??
Shuai Zheng:
indonesia
Mei Li:
What did US southerners call a northerner who moved to the south in the 1860-70s to exploit opportunities in the Reconstruction era, and which word today refers to an opportunitistic investor, especially where a mutual society might convert into a public commerial company??
Shuai Zheng:
carpetbagger
Mei Li:
Corundum, widely used as an abrasive, is a crystalline form of an oxide of which metal??
Shuai Zheng:
aluminium