药物致神经系统的不良反应是（）。
A、发热
B、腹痛
C、低血压
D、荨麻疹
参考答案：A
防毒技术中，为提高对难吸附毒剂的吸着能力，必须在活性炭上添加催化剂。
Nancy doesn't enjoy her job anymore. She's _________ because every day she doesexactly the same thing. [ ]
A. relaxing
B. relaxed
C. boring
D. bored
