In Papousek's experiment babies make learned movements of the head in order to______.
A. have the lights turned on
B. get the milk
C. please their parents
D. be praised
查看答案
A．institutionB．mechanismC．unitD．office
A. institution
B. mechanism
C. unit
D. office
A．resortsB．sitesC．locationsD．attractions
A. resorts
B. sites
C. locations
D. attractions
A．everB．neverC．asD．since
A. ever
B. never
C. as
D. since
The purpose of the writer is______.
A. to reduce modern technology
B. to improve man's way of life
C. to warn people not to change the natural environment
D. to call attention to the protection of the natural environment
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