并列题名：Vocabulary for exams 并列题名：Vocabulary for CET-4 并列题名：Vocabulary for CET-6 并列题名：Vocabulary for IELTS Vocabulary for exams 并列题名：Core vocabulary for IELTS 并列题名：Basic vocabulary for IELTS Core vocabulary for learners 并列题名：800 key vocabulary for IELTS Core vocabulary for IELTS