参考答案

正确答案：A
解析：本题测试点是动词。A)convince使(人)相信，使(人)明白；B)persuade说服；劝服；C)ensure保证；担保；D)admit承认。convince常用句型为convince sb．of sth．或convince sb，+that clause例如： The newspaper article has convinced me that smoking is a dangerous habit．报上的文章使我深信吸烟是一种危险的习惯。persuade常用句型为persuade sb，to do sth．例如：The doctor persuaded me to stop smoking．医生劝我戒烟。故应选A为正确答案。