某房地产开发公司与某设计单位签订的设计合同属于（）
A.要式合同
B.单务合同
C.无名合同
D.从合同
参考答案：A
— What about your journey to Mount Hua?
— Everything was wonderful except that the car we rented _____ on the way back. [ ]
A. broke up
B. broke down
C. broke out
D. broke in
肺牵张反射的感受器位于（）
A.颈动脉窦
B.颈动脉体
C.主动脉弓
D.支气管和细支气管的平滑肌
