價格：免費
檔案大小：20.7 MB
版本需求：系統需求：iOS 9.2 或以後版本。相容裝置：iPhone、iPad、iPod touch。
支援語言：英語
According to your knowledge, you must choose the right answer from the given options within the time limit.
Question:
-All questions are filtered by difficulty. The more questions you answer, the more difficult it will be. The difficulty of a question is indicated by a white scale under each question.
-You get more points for difficult problems, increase knowledge, challenge yourself,
Let you have fun in your study,
Valuable and little-known sources of information
-Interesting questions for all difficulty levels
