用于治疗溃疡性结肠炎
A．抑肽酶B．水杨酸偶氮磺胺吡啶C．左旋多巴D．甲氧氯普胺(胃复安)
参考答案：B
— ____________ you ____________ your homework last evening?
— Yes.[ ]
A. Did; did
B. Do; do
C. Do; did
D. Did; do
进口黄金及其制品，进口企业应事先向中国人民银行办理《黄金产品出口准许证》。
