這項發明測驗是提高您對發明知識的最佳途徑
This Inventions app has been developed for testing your skills of Inventions . This app has more than 10,000 multiple choice questions and answers. This Inventions quiz app suits for all lower, intermediate and higher levels. The questions at all levels will be displayed randomly. The user can improve Inventions knowledge and user can score well in high school, college and competitive level examinations. This is a free version and you can be used in both offline and online.