It is widely accepted that young babies learn to do things because certain acts lead to __________.[

题目简介

It is widely accepted that young babies learn to do things because certain acts lead to __________.[

题目详情

It is widely accepted that young babies learn to do things because certain acts lead to __________.
[     ]

A. reward  
B. prizes
C. awards  
D. results

题型:单选题难度:中档来源:同步题

答案

A

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