171.both A and B A和B都… 172.think about```` 考虑……
169.a pair of````一双…… 170.keep````away from`` 保持……在外
167.ever since 自从……以来 her of```` ……中没有一个
165.keep doing sth不断作某事 166.be worn out 穿破
163.less developed countries不发达国家 164.seem to be all right似乎正常
161.take one’s temperature 测体温 162.be sure to do sth 确信作某事
159.feel a little afraid of 感到有点害怕 160.developed countries发达国家
157.at the beginning of 在…开端 158.catch a cold 感冒
155.by then 到那时为止 156.play against````与……打比赛
154.grow faster and faster增长得越来越快