SFT

例句：

1. 1. The SFT is a popular choice for students who need to study for exams.
   SFT是学生为了考试需要而选择的一种流行选项。
2. 2. The SFT is designed to help students improve their reading comprehension skills.
   SFT旨在帮助学生提高阅读理解技能。
3. 3. The SFT is an excellent tool for teaching vocabulary and grammar.
   SFT是一种优秀的教学工具，用于教授词汇和语法。