能使小鼠产生抗DNP抗体的抗原是()
A.DNP
B.多聚L-赖氨酸
C.DNP-牛血清蛋白
D.小剂量牛血清蛋白
E.大剂量牛血清蛋白
参考答案:C
To the thief's surprise, a tourist filmed his stealing the money _____. [ ]
A. by accident
B. by the accident
C. in accident
D. in the accident
施工控制网是()。