苄星青霉素的鉴别反应
A．费休法B．铂电极C．汞-硫酸亚汞电极D．萘E．青霉素V
参考答案：A
亚洲西部与_______洲相连，西南与_______洲为邻，东南与_______洲隔海相望，东北以________海峡与北美洲为界。
I am afraid that I ______ finish the task in such a short time. Could you help me, please? [ ]
A. can
B. am not able to
C. am going to
