8. A computer program product for teaching a vocabulary, the computer program product comprising: one or more computer-readable tangible storage devices; program instructions that are stored on at least one of the one or more storage devices and that, when executed by a processor, receive a user selection of a chapter from a plurality of chapters in a Chinese-English textbook, the chapter including a plurality of vocabulary words; program instructions that are stored on at least one of the one or more storage devices and that, when executed by a processor, receive a user selection of a language in which to display questions in a user interface, wherein the language in which to display the questions is one of English, Simplified Chinese, Traditional Chinese, and Pin Yin; program instructions that are stored on at least one of the one or more storage devices and that, when executed by a processor, receive a user selection of a language in which to receive answers to the questions in the user interface, wherein the language in which to receive the answers is another one of English, Simplified Chinese, Traditional Chinese, and Pin Yin, such that the language in which to display the questions and the language in which to receive the answers are different; program instructions that are stored on at least one of the one or more storage devices and that, when executed by a processor, determine a question, the question including a vocabulary word of the plurality of vocabulary words in the language in which to display the questions; program instructions that are stored on at least one of the one or more storage devices and that, when executed by a processor, receive an answer to the question in the language in which to receive the answers, the answer including a vocabulary word; and program instructions that are stored on at least one of the one or more storage devices and that, when executed by a processor, determine if the answer is a correct answer in response to receiving the answer.
10. The computer program product of claim 8 , wherein the program instructions that determine if the answer is a correct answer comprise program instructions that determine that the vocabulary word in the question and the vocabulary word in the answer both match an entry in a Traditional Chinese/Pin Yin/English dictionary encoded in Unicode.