A—Snapshot B—Word Power C—Conversation D—Grammar Focus E—Pair Work F—Role Play G—Group Work H—Class Activity I—Pronunciation J—Listening K—Writing L—Reading M—Interchange Activities N—Additional Optional Activities O—Achievement tests 51. ( )交流活动 ( )语法重点 52. ( )词汇扩展 ( )小组活动 53. ( )语音练习 ( )角色扮演 54. ( )会话练习 ( )辅助活动扩展 55. ( )成果测试 ( )两人对话