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Passage Three
32.
A. When they are with a baby-sitter.
B. When they are with another baby.
C. When they are with a strange adult.
D. When they are with an elderly person.
33.
A. He conducts large-scale tests.
B. He writes books about children.
C. He teaches at the university.
D. He recommends babysitters.
34.
A. They show fear.
B. They reach out.
C. They start to cry.
D. They turn to adults.
35.
A. Keep them in family-based day care centers.
B. Let them stay with their parents or teachers.
C. Ask elderly adults to attend them.
D. Hire an experienced baby-sitter.
