第一节 听下面5段对话。每段对话后有一个小题，从题中所给的[A]、[B]、[C]三个选项中选出最佳选项，并标在试卷的相应位置。听完每段对话后，你都有10秒的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。 What does the woman want to do

A．they begin to shrink in height and break bones easily as they grow older
B．they can avoid the writer's troubles if they think over them later in life
C．they should ask their parents to set the best examples for them
D．the choices they make now can make a big difference in how they feel later in life

A．Putting much money in the bank.
B．Getting the right kind of bone-building nutrition and exercise.
C．Snack on chips or slurp soda instead of thinking about vitamins.
D．Standing by the elevator.