患者，女，48岁。腰酸肢冷，腹胀纳呆，大便溏薄，经行量多如冲，色淡，平时带下清稀量多，舌淡苔薄白，脉沉细无力。首选方是

A．左归丸

B．右归丸

C．二仙汤

D．固本止崩汤

E．内补丸

To have a computer without being connected to the Web is like having an old radio when everybody else has a color TV. That helps explain ______ businesses are setting up Net sites even though profits are nowhere to see.

A．reasons

B．the reason for

C．why

D．why that