日韩欧美亚洲 _ 欧美亚洲一区 _ 日本亚洲欧美 _ 亚洲精品欧美国产白袜脚足J棉袜在线观看_亚洲熟妇av一区二区三区_久久天天躁狠狠躁夜_精品众筹模特私拍在线

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

你可能感興趣的試題

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

單項(xiàng)選擇題

The smallest meaningful unit of language is（）.

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