When we reached the stadium in a rush,  the newly-elected major ____ his speech and the performance _______.

A．have finished ; began

B．had just finished; was about to begin

C．had just finished; had begun

D．just finished; began

面对严峻的资源短缺和环境污染，我们应树立生态文明观念，保持人与自然环境之间的和谐。消费上要坚持（）

A.量人为出适度消费

B.保护环境绿色消费

C.勤俭节约艰苦奋斗

D.避免盲从理性消费