宜另煎的中药饮片是（）
A.降香
B.鹿角霜
C.海金沙
D.西红花
E.紫河车
参考答案：D
—These grapes look really beautiful.
—They _______! See the price $3.99 a pound. Very expensive, aren’t they!
A．might
B．could
C．would
D．should
某些物质在温度低到某个值（临界转变温度）以下时，突然变得______，这种现象叫超导性；从能量的角度来看，用超导体做输电线的最大特点是______．
