feat：12月活动

mec-biz/src/main/java/com/ym/mec/biz/service/impl/DegreeRegistrationServiceImpl.java

@@ -139,7 +139,7 @@ public class DegreeRegistrationServiceImpl extends BaseServiceImpl<Integer, Degr
             if(Objects.isNull(practiceGroupSellPrice)){
                 throw new BizException("该分部暂未参与此活动");
             }
-            BigDecimal practiceUnitPrice = practiceGroupSellPrice.getOnceActivityPrice(),
+            BigDecimal practiceUnitPrice = practiceGroupSellPrice.getOnceOriginalPrice(),
                     vipUnitPrice = new BigDecimal("0"), highUnitPrice;
             if(student.getIsNewUser()){
                 vipUnitPrice = practiceGroupSellPrice.getVipOneStudentTwelveCourseActivityPriceWithNewUser();