单项选择题
A. the causes for his successes B. some of his failures C. another part of his personality D. why he was left behind the modern competition
A. respond to the need for new schoolbooks B. show the distinct development of the English language in America C. improve spelling forms based upon British models D. influence the pronunciation of the English language
A. decreasing the pulse rate B. a loss of carbon dioxide C. causing breathing problems D. causing asthma