第35题: [单项选择]The article suggests that when a person______ under unusual stress he should be especially careful to have a well-balanced diet. A. is B. were C. be D. was 参考答案:A 答案解析:本题中所填谓语动词是宾语从句中时间状语从句中的谓语动词,不受主句谓语动词的影响。由于该时间状语从句表示的是一种客观情况,因此选用一般现在时。例如:Life has a value only when