下面哪些真正是乳糖操纵子的诱导物?()
A.乳糖
B.蜜二糖
C.O-硝基苯酚-β-半乳糖苷(ONPG)
D.异丙基-β-半乳糖苷E.异乳糖
参考答案:B, D, E
Tom is a speaker. He is used to in public.
A. speak B. speaks C. speaking
下列心理测验结果提示右半球功能障碍()
A.言语困难◇语言知觉能力低
B.操作智商显著低于言语智商
C.言语记忆成绩特别低
D.右侧躯体存在感知觉异常