This exam class is specially designed for mathematics teachers in China. Using BHCexam you can separate the format and the content very well; export both teacher paper and student paper; typeset multiple choice questions with 3-6 options keeping adaptively neat alignment; typeset cloze questions with a customizable underline; typeset questions with subquestions in lists; group questions in a list to control whether to show score, leave spacing, initialize question number; and more.