Onecanfigureoutthemeaningof“airmail”tobe“mailbyair”byits______.
A、onomatopoeicmotivation
B、morphologicalmotivation
C、semanticmotivation
D、etymologicalmotivation
Thebasicunitinthestudyofmorphologyis______.
A、theinternalstructure
B、morpheme
C、therulesbywhichwordsareformed
D、word
_______forthefreeticket,Iwouldnothavegonetoseefilmsooften.
A、Ifitisnot
B、Wereitnot
C、Haditnotbeen
D、Iftheywerenot
WhichofthefollowingisNOToneofthecontextclues?
A、Definition
B、Polysemy
C、Synonymy
D、Antonymy
英语翻译：thescienceofbioticcontrol