47. According to the passage, our serf-images _________. (A) have positive effects (B) are probably untrue (C) are often changeable (D) have different functions

45. The purpose of the passage is to _________. (A) describe the difficulties today’s parents have met with (B) discuss the development of the parent—child relationship (C) suggest the ways to handle the parent—child relationship (D) compare today’s parent—child relationship with that in the past