处方直接写药名，需调配烫制品的是
A．龟甲
B．僵蚕
C．鳖甲
D．穿山甲
E．紫苏子
参考答案：A,C,D
I can't go to the cinema with you because I _____ stay here until my mother comes back. [ ]
A. can
B. could
C. may
D. must
已知长方形的长和宽的比是4：3，长为16厘米，则宽为多少厘米？
