截止到6月6日12时，四川汶川地震累计受灾人数大约46 160 000人．政府决定为受灾群众每人每天发放粮食0.5kg，那么给受灾群众每天发放粮食的总量用科学记数法（四舍五入保留2个有效数字）表示约为（　　）

A．0.23×10⁸kg

B．2.31×10⁷kg

C．2.30×10⁷kg

D．2.3×10⁷kg

We used to work in the same office and we____ often have coffee together, which I missed so much years later.

A．would

B．should

C．could

D．might