单选题 In an attempt to improve employee productivity, a useful program of different ______ has been designed by human resources department.
  • A. activities
  • B. active
  • C. act
  • D. actively
【正确答案】 A
【答案解析】[解析] 单词形态：名词 1．这是一道词汇形态选择题，选项均为act的不同形式。 2．空格内需填入一个名词，由形容词different修饰。因此A．activities为正确选项。