—Long time no see．Haven't you graduated from college?

—Yes．I____business management for 4 years in Beijing．

A．study

B．have studied

C．studied

D．am studying

日本人在正式场合吃饭时，没有进餐时，筷子是如何摆放的？（）

A.左侧竖着摆放

B.右侧竖着摆放

C.右侧横着摆放

D.横着摆放在用餐者前