A. modified B. ascertained C. testified D. violated 参考答案:A 答案解析:考点 动词辨析。modified“修改”;ascertained“查明,确定”;testified“作证,证明”;violated“违反”。 [译文] 如果一个科学家认为某种想法是正确的但又发
第24题: [单项选择]We have been told that under no circumstances ______ the telephone in the office for personal affairs. A. may we use B. we may use C. we could use D. did we use 参考答案:A 答案解析:本题考查倒装句。under no circumstances后面的句子需要用半倒装结构,首先排除掉选项 B和选项C。再根据have been told可知that后的宾语从句应用一般现在时,所以选项A