长篇阅读
36.C.
piaget Believed that small children
37. J
The author and his colleagues
38. B
In the latter half of the last century
39. A
Research conducted by Jane.
40. K
Our improved understanding of babies.
41. E
It has been found in recent research
42. M
Scientists are still debating. .
43.H.
the newer research methods focus on
44. D
With the progress in psychology
45. L
Even though marked advances have been made.