青藏高原与长江中下游平原纬度相当，但气温日较差比长江中下游平原大。运用大气热力作用分析其原因，青藏高原（    ）

①心慈则柔，心诚则灵    ②君子爱财，取之有道

③君子一言，驷马难追    ④人而无信，不知其可

根据句意及所给的汉语，补全所缺的单词，每空限填一词。
____ The girl often helps me with my __________（最糟糕的）subject.
____ I think you made a good _________（决定）.
____ We looked at each other in _________（沉默）.
____ I had an unusual           (经历) last Sunday.
____ You shouldn’t _________ (播放) your CDs too loudly.
____ Now many students are under too much __________（压力）.
____ If Paul _________（失败）the exam again, his teacher will talk with his parents about it.
____ He had an accident. But ___________（幸运地）, he was not badly hurt.
____ It is very __________（危险的）to play football in the street.
____ He didn’t know what was __________（发生）outside.