单选题 The marketing manager said that he ______ inspected customers' preferences before launching a new advertising campaign.
  • A. close
  • B. closely
  • C. closed
  • D. closer
【正确答案】 B
【答案解析】[解析] 单词形态：副词 1．选项均为动词close的不同形式。 2．空格内应填入副词，修饰及物动词inspected，因此B closely为正确选项。 3．与closely类似的词还有thoroughly和carefully等。