■ Purpose of this applicationIt is an application to support acquisition of English words published in the following books. We are developing and publishing it under the consignment of the issuer."Advanced standard English in CEFR international standard"(Kiyumi Hinata, Miki Kano, published by Hidekazu system by Susumu Junio)This book and the application are published following the following book, and it deals with English words of B2 (Intermediate to Advanced)."English standard beginners class"(Published by Hidenai system by Hinata Kimito)■ What is international standard?The CEFR (Common European Framework of Reference for Languages) established by the Council of Europe, Ministry of Education, the Ministry of Education, NHK and major learning cram schools are beginning to adopt, the de facto "international standard "Has become.In the above book, this B2 level English word is explained with example sentences.■ Function of this application· All sample sentences of the book are quizzed.· The problem consists of 30 parts. It is 136 questions per part.· You can confirm the result on the spot with a single question answer.· It is a form of keying in words and phrases that apply to the blank part enclosed in [] in problem sentences.· You can display a Japanese translation of the problem sentence.· It is possible to repeatedly challenge incorrect answers and skipped problems until the correct answer rate is 100%.· You can challenge repeatedly by clearing the answer (challenge) situation of each part or all parts.· Once you have recorded the problem you are interested in, you can check it later.■ Operating environmentWe assume android 4.1 or later, but the following could be confirmed on the actual machine.Nexus 5X (8.1.0)Huawei P20 Pro (8.1.0)Xperia Z5 Premium (7.0)ZenPad 3s 10 (7.0)Xperia Z2 (5.0.2)GALAXY SIII α (4.3)It is premised that it is used in the vertical direction, but in the case of the tablet it can be used either vertically or horizontally.