Ⅰ.单词拼写
1．The book was written in a style appropriate__ to the age of the children.
2．Witnesses__to the crash said they saw an explosion just before the disaster.
3．A survey of the American diet has revealed__that a growing number of people are overweight.
4．The twins are similar in many aspects, although not identical__．
5．The study also demonstrated__ a direct link between obesity and mortality(死亡率).
6．A combination of __internal__(内部的) and external factors caused the company to close down.
7．The __incident__(严重事件) happened just after ten o'clock last night.
8．People get job satisfaction from different factors, such as social__interactions__(交流) with colleagues.
9．They have been treated with this drug in clinical__trials__(试验).
10．He doesn't really know a thing about the theatre—he's just __posing__(装腔作势)!
