在Ab产生的一般规律中,初次应答产生最早,具有早期诊断价值的Ig是()
A.IgG
B.IgM
C.SIgA
D.IgE
E.IgD
参考答案:B
Though he tried many ways to solve the problem, ______ worked; he decided to turn to his tutor for
help. [ ]
A. none of which
B. all of them
C. none of them
D. all of which
专家()认为当教师要求儿童想象性地运用技能,创造出与众不同的视觉形象的时候,应为儿童设置表现目标。
A.席勒
B.斯滕豪斯
C.艾斯纳
D.里德