In order to eliminate an idle time unavoidable when reading a text or book written in a foreign language by referring to a dictionary of the foreign language, the text or book of the foreign language and the dictionary are combined as a set, wherein one dictionary of the foreign language is specified and the page number of the dictionary which can identify an appropriate word is put over or under that word of the text or book. This is believed effective as a learning material for extensive reading for a learner of a foreign language and may be used by people in general.
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