單項(xiàng)選擇題Lying under the skull, the human brain contains an average of the ten billion nerve cells called().

A.neurons
B.nerve system
C.nerves
D.cerebral cortex


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1.單項(xiàng)選擇題()refers to a word or expression that is prohibited by the “polite” society from general use.

A.Linguistic taboo
B.Euphemism
C.Address term
D.Slang

2.單項(xiàng)選擇題The smallest meaningful unit of language is().

A.root
B.affix
C.stem
D.morpheme