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

Searle'sclassificationofillocutionaryactsisbasedontheclassificationofperformativeverbs.

ThedivisionofEnglishintoOldEnglish,MiddleEnglish,andModernEnglishisnonconventionalandnotarbitrary.

Fromthesociolinguisticperspective,aspeechvarietyisnomorethanadialectalvarietyofalanguage.

Researchfindingshaveshownthatlanguageprocessingcentersaresituatedinasingleareaofthelefthemisphere.

EmpiricalstudiesshowthattheprocessofSLAisaprocessofconstructingandmodifyingrulesofcommunication.

骨盆是由骶骨、尾骨和左右两块髋骨构成。（）

葡萄胎刮宫术中如有大量出血，应立即配血。

孕激素可促使子宫发育、肌层增厚。（）

输卵管妊娠破裂前，妇科检查子宫颈有触痛。（）