消费者在购买使用商品和接受服务的同时，应享有()
A.价格优惠
B.人情接待
C.人格尊严
D.特殊服务
参考答案：C
It’s half past four. School is over. The children___ games happily on the playground.
A．play
B．are playing
C．played
D．have played
油压式或气压式紧急切断阀应保证在工作压力下全开。
