The basic unit in the study of morphology is ______.
A、theinternalstructureB
正如音位是音系学研究中的基本单位一样，词素是形态学研究中的基本单位。
Accordingtothe"principles-and-parameters"theory,"principles"refertohighlyabstractpropertiesofgrammarwhichareappliedtolanguageingeneralandwhichgeneratephrasesandatthesametimerestrainthepowerofMovea,while"parameters"allowgeneralprinciplestooperateincertainrestrictedways,accordingtowhichparticulargrammarsofnaturallanguagesvary.
Johnsonwas________unknownbeforerunningforthepresidency.
Thereisadeadlock(僵局)inthediscussionwhenneithersidegives________totheother.
Theoldcouplehavebeenmarriedfor40yearsandneveronce_______witheachother.
Thebasicunitinthestudyofmorphologyis______.
