单项选择题


Questions 14 to 16 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions.
Now listen to the passage.
What, in Dr. Richard Perelman’s opinion, is not a good idea to take care of children

A.Leave them to a baby-sitter.
B.Leave them in a day-care center.
C.Leave them with other children with a care of an adult.
D.Leave them in a kindergarten.