The normal hamsters had a daily cycle of 24 hour, and the mutants were on a 20- hour cycle.
A. Right
B. Wrong
C. Not mentioned
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This passage is about ______.
A. infants' education
B. negative effect of infant school
C. childhood
D. advantages of infants' early care
The argument against Bowlby's conclusion shows that ______.
A. there is on negative delayed effect on infants who go to school before three
B. there is long-term effect on infants who go to school before three
C. children who are sent to school before three are subject to mental illness
D. children have problems with day care
Normally rice contains Vitamin A.
A. Right
B. Wrong
C. Not mentioned
The front and side sections of the brain relates to ______.
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