第6题: [单项选择]下列语句中符合C语言语法的赋值语句是_______。 A. a=7+b+c=a+7 B. a=a+7 C. a=7+b,b++,a+7; D. a=7+b,c=a+7; 参考答案:D 答案解析:[评析] 由于赋值语句是由赋值表达式加分号构成,所以选项A、B均不是合法的赋值语句;选项C中,存在两种运算符:逗号运算符和赋值运算符,其中赋值运算符的优先级高,选项C也不是。
第8题: [单项选择]A. Mr. Johnson never smokes now. B. Mr. Johnson took the doctor’s advice seriously. C. Mr. Johnson was suffering from health problems. D. Mr. Johnson was sick and has to quit smoking. 参考答案:B 答案解析:[听力原文] After his doctor told him how to stay health, Mr. Johnson hardly ever smokes, though h