问题
选择题
It is widely accepted that young babies learn to do things because certain acts lead to _____. [ ]
A. rewards
B. prizes
C. awards
D. results
答案
答案：A
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It is widely accepted that young babies learn to do things because certain acts lead to _____. [ ]
A. rewards
B. prizes
C. awards
D. results
答案：A
，B区人口是A区人口的
，C区人口是D区和E区人口总数的
，A区比C区多3万人。全市共有多少万人（）