消费税的经济调控意义有（）。
A.调整消费结构
B.矫正不良消费习惯
C.限制过度消费
D.平衡供求关系
参考答案：A, B, C, D
吸尘罩是间接靠近尘源的吸入口，吸尘效果除了与吸尘风量有关外，还与形式和安装位置有关。（）
So _____ in the darkness that he didn’t dare to move an inch.
A．he was frightened
B．was he frightened
C．frightened he was
D．frightened was he
