具有散瘀消痈功效的药物是
A．大蓟B．地榆C．槐花D．白茅根E．侧柏叶
参考答案：A
Modern teaching equipment as well as some computers ________ to the village school last week.
A．were sent
B．was sent
C．has been sent
D．had been sent
警戒区有何作用？
