Zhao Benshan，whose overwork      his health failure last year，failed to perform in the Spring Festival

Gala on CCTV. [ ]

A. submitted to    

B. admitted to    

C. contributed to    

D. subscribed to

车辆行至急转弯处时，应减速并靠右侧行驶，防止与越过弯道中心线的对方车辆相撞。