16.一般情況下，對疾病發(fā)生起主導(dǎo)作用的因素是(      )

A.邪氣                                                        B.正氣

C.臟腑                                                        D.氣血

17.陽虛證的主要臨床表現(xiàn)為(      )

A.神疲乏力                                                 B.形寒肢冷

C.形體消瘦                                                 D.大便溏薄

18.膽郁痰擾的審證要點是(      )

A.右脅疼痛                                                 B.失眠驚悸

C.身目俱黃                                                 D.寒熱往來

19.“老年慎瀉，少年慎補”是依據(jù)什么而確定的用藥原則？(      )

A.因時制宜                                                 B.因地制宜

C.因人制宜                                                 D.標(biāo)本同治

20.通因通用適用于(      )

A.血虛經(jīng)閉                                                 B.脾虛便秘

C.陽虛尿少                                                 D.瘀血崩漏