A．将二胡的弦调松点
B．将二胡的弦调紧些
C．换用一根较细一点的琴弦
D．用力拨动琴弦
BC
花色热菜又称为______。
A．拼摆热菜
B．观赏热菜
C．展示热菜
D．造型热菜
— ________ does Mrs. Li wash her car?
—Once a week [ ]
A. How long
B. How often
C. How far
D. How soon
