第19题: [单项选择]At the same time, medical and social science research began to indicate that retire ment itself had detrimental effects. A. damaging B. magnificent C. useful D. relevant 参考答案:A 答案解析:[解析] 各选项的意思是:damaging有破坏性的,损害的。magnificent宏大的,庄严的,堂皇的。useful有用的,有益的。relevant有关的;适当的。画线单词detrimental的
第33题: [单项选择]______,I will help you with your work. A. If am possible B. If it possible C. If possible D. Possible 参考答案:C 答案解析:If possible是If it is possible的省略说法。