Add Google translator n Add more testsnnThe most challenging in the TOEFL test is that you have to familiar with a wide knowledge of sciences such as Biology, Archeology, History, Art, Environment, Social and Human science. Therefore, it is so difficult to have enough vocabulary for the specific science, especially, you may even confuse with the meaning of the word in the specialized field. nTOEFL iBT Preparation is the best tool for improving your vocabulary over all covered areas of TOEFL Test with clearly and distinctly explained meaning. Moreover with this application, you can quickly accustom with multiple choice test, one of the most types in the Toefl test.nFeatures include:nThe most commonly tested vocabulary words on the TOEFL exams in six specific sciences including archeology, biology, environment, history and art, geology, and social sciences. nAll words have audio and definition of English, VietNam and Korea meaning. With the convenient "Play" mode, you can just listen and learn, without having to look at the screen. Especially, three modes: easy, moderate, and tough will help you classify the words that you are well known, know a little, and don't know. nIn the multiple choice test, this application will give you sentences that you always see in the Toefl test in which you have to choose the word or phrase closest in meaning to the highlighted part.nGroup choice Test enables you know a set of words that have same meaning to each others.nWord choice Test let you find the word that can replace a given word in a specific meaning.