-
难度:
精通
脊髓痨
错误选项:propagation,find out,atomic energy
-
难度:
未分级
n.自由
错误选项:pranced,pocket,wiling
-
难度:
进阶
运输;经过
错误选项:vacationed,felon,practitioners
-
难度:
基础
滚筒,滚轴
错误选项:examination,ground crew,as the case might be
-
难度:
基础
显微镜
错误选项:compartments,epideictic,exigencies
-
难度:
进阶
考虑
错误选项:tell it like it is,program library,leach
-
难度:
未分级
(用于信函抬头前)亲爱的
错误选项:atlanta,decreed,hammered
-
难度:
进阶
零;无
错误选项:contain,empiric,ladle
-
难度:
未分级
n.提示,指点
错误选项:contemplates,natural process,germs
-
难度:
精通
退热药
错误选项:barefooted,spikes,at the drop of a hat