题目

Sandy MacNeill was vacationing in Florida. One day, he was walking down a street in Indian Rocks Beach right when Tom Reddon _________ to the sidewalk.Reddon had just had a quick warm-up walk with his friend when he _________ fell to the ground, unconscious. As Reddon’s _________ called 911, two passing pedestrians ran to _________ someone who could _________ CPR (心肺复苏术) — and luckily, they managed to _________ MacNeill.Though MacNeill says that he has taken several CPR classes in the past, he had _________ actually performed the procedure on another person until Reddon.MacNeill 下列现象中说明分子间存在相互作用力的是A.气体很容易被压缩B.两个纯净的铅块紧压后合在一起C.高压密闭的钢管中的油沿筒壁逸出D.滴入水中的微粒向各方向运动