In English, vis bears the meaning of "to look at something" and can be combined with affixes to form new words, as in supervise, revise, etc. In this sense, vis is a ______ morpheme.

单项选择题The famous ______ Gold Rush began in the U. S. in the mid-nineteen century.

单项选择题At the turn of the 18th and 19th centuries ______ appeared in England as a new trend in literature.

单项选择题The currency in Australia is ______.