Which verb tense is predominantly used in the sentence 'These brands have shaken an industry long accustomed to seasonal cycles'?
答案解析
Core concept: Grammar - verb tenses Key determination: 'Have shaken' uses present perfect simple structure (have + past participle) to express completed action with present relevance Analysis: C correctly identifies the structure A would require 'have been shaking' B refers to actions before past events D ('shook') would disconnect from current impact
正确答案：C