Access art databases for antique families, early auctions, and overseas museum collections. Query seal, signature, and dynasty information. Convert square measurements and search historical data for research and authentication.
Shanghai Xiaoshen Education Technology Group Co., Ltd
Practice GMAT questions and track progress
Study for GMAT with adaptive mock exams, real-time feedback, and access to OG, Prep, GWD, and Manhattan question banks. Practice vocabulary, solve math and logic problems, and review detailed explanations.
Extension of Dalian Science and Technology Co., Ltd.
Study JLPT vocabulary and grammar
Prepare for JLPT exams with structured study plans tailored to individual needs. Use spaced repetition to review vocabulary and grammar. Access a comprehensive grammar question bank and practice exams.
Learn physics with interactive 3D models, real experiment videos, and animated explanations. Access思维导图 for review, watch knowledge videos, and complete同步练习 for practice.
