治疗筋脉挛急疼痛的药物，应选用的药味是（）
A.酸
B.苦
C.甘
D.辛
E.咸
参考答案：C
The situation after the big earthquake was unexpected, and no one knew what would ________ of us the next minute.
A．spend
B．happen
C．relax
D．become
冷油泵的材质一般是（）。
A.铸钢
B.铸铁
C.不锈钢
D.合金钢
