A morpheme is the smallest meaningful unit in the grammar of a language. The word dogs consists of morphemes and one syllable, and the word unladylike consists of______ morphemes and four syllables.

A．one has been admitted to a designated course
B．one has been in Britain for three years before a course begins
C．one has attended a higher-education course for two years with a grant
D．one has to participate in some examinations which are highly competitive

A．Because they cannot be eradicated by herbicides.
B．Because all selective herbicides can encourage the growth of previously unimportant weeds by eliminating their competitors.
C．Because they were hardly considered before so that their seeds were not prevented from germinating.
D．Because they benefit greatly from the fertilizer applied to the farm lan