What is true about verbal language?(2.0)

A、Foreignlanguagelearnersshouldpayspecialattentiontotheslangandidiomaticexpressionsusedbynativespeakers.
B、Meaningswillvarydependingonthecontextwhichcanbehardforforeignlanguagelearnerstocomprehend.
C、Thingsorconceptsarerepresentedbyoneorperhapstwotermsinonelanguage,butbymanymoretermsintheotherlanguage.
D、Theculturalconnotationsofwordscanmakethedifferencebetweenanactivesociallifeandnoneatall.
E、Aterminonelanguagedoesnotnecessarilyhaveacounterpartintheotherlanguage.
F、Termshavemoreorlessthesameprimarymeaning,buthavesecondaryoradditionalmeaningsthatmaydifferconsiderablyfromeachother.