testify to 说明，证实
flare up 突然燃烧起来;突然发怒
queue up 排队，排队等待
acquaint sb. With 使认识，使了解
correspondence with 通信
congratulations on 祝贺
dependence on 依靠;依赖;信赖
dissatisfaction with/at 不满，不平
exposure to 受到
longing for 渴望
objection to 反对，异议
preference for to 偏爱，喜爱;优惠;优先选择
proficiency in 熟练，精通
requirement for 需要，需要的东西，要求
thirst for 渴望，热望
by comparison 比较起来
第六十组
in sequence 依次，逐一
at stake 在危险中，利害攸关
in accordance with 与……一致
on behalf of 代表……，为了……
accustomed to 习惯于
on the sly 偷偷地，冷不防地
in excess of 超过
to and fro 来来回回
on schedule 按预定时间
on sight 一见就……，立即
点睛：应用范围广泛的词组学习
【例句】Prolonged exposure to these pollutants may result in chronic disease.
长期接近这些污染气体，就会引起各种慢性疾病。
【例句】The Chinese nation has reached a point where its very existence is at stake.
中华民族到了这生死存亡的关头。
