1 . In order to highlight Hangzhou’s efforts to host “smart Games”, the Asian Games in Hangzhou introduced a digital torchbearer program which allows any smartphone users to take part in the torch ______.

A．relaxation

B．relay

C．reliance

D．relocation

3 . The ______ of the pain can be easily achieved but the disease can be hardly cured.

A．harmony

B．relaxation

C．relief

D．ease

4 . To their ________, their students narrowly escaped from the shaking building.

A．relaxation

B．belief

C．relief

D．regulation