黑热病用于早期诊断和疗效判定的血清免疫学检测方法是()
A.IFA
B.ELISA
C.单克隆抗体抗原斑点试验
D.PVC薄膜快速ELISA
E.IHA
参考答案:C
The children all turned_______the famous actress as she entered the classroom.
A.looked at
B.to look at
C.to looking at
D.look at
什么叫磁路?