单选题 Before writing a book, _________.
  • A. you must first ponder what to say and what not to be said carefully
  • B. it's extremely necessary that you know what to say
  • C. you must first ponder what to say and what not to say
  • D. the first thing is to consider what to say


【正确答案】 C
【答案解析】[妙翻巧译] 写书之前，首先要考虑说些什么。
[解析] 本句考查的是结构应用中的“一致关系”：由before(、when，while，if，unless，after等词)引导的分词短语作状语时，这些短语的逻辑主语必须是句子的主语。