WhichofthefollowingisNOToneofthemainsourcesofnewwordsinthepresent-dayEnglishvocabulary?

英语翻译：poisonouschemicals

Johnsonwas________unknownbeforerunningforthepresidency.

Iparticularlywanttopaytribute,notonlytothosewhopreparedthemagnificentdinner,butalsotothosewhohaveprovidedthesplendidmusic.（）

Accordingtothe"principles-and-parameters"theory,"principles"refertohighlyabstractpropertiesofgrammarwhichareappliedtolanguageingeneralandwhichgeneratephrasesandatthesametimerestrainthepowerofMovea,while"parameters"allowgeneralprinciplestooperateincertainrestrictedways,accordingtowhichparticulargrammarsofnaturallanguagesvary.