Our innovative products and services for learners, authors and customers are based on world-class research and are relevant, exciting and inspiring. 评估考生所使用词汇的范围以及所使用词汇的准确性和恰当性。 语法范围和准确性 考试由听力、阅读、写作和口语四部分组成，分为 学术类 和 普�