【mobile phone supported】Supports videos, chapter tests, documents, live broadcasts, homework, and exams of [Chaoxing], [Xueyin Online]; scripts can be started with one click, run automatically on a single page, and can be minimized and run without interruption; does not occupy network speed or traffic; [300 millions questions] covers 99% of questions, supports single-choice, multiple-choice, fill-in-the-blank, judgment [picture questions, programming questions, listening questions]