______ has an internal clock that regulates the beating of our hearts, and the ______ of our breathing.

A. Mankind; step           B. Human; pace           C. Human being; step         D. Man; pace

It has always been the _____ of our firm to encourage workers to take part in social activities.

A. plan    B. campaign    C. procedure    D. policy

It has always been the _____ of our government to encourage graduates to start their business.

A. plan               B. campaign         C. procedure             D. policy

 The _______of our life has been improved greatly since the Party’s policy was carried out.

A. attitude    B. quality           C. outline        D. altitude

It has always been the _____ of our firm to encourage workers to take part in social activities.

　　A. plan    B. campaign    C. procedure    D. policy