responsive
adjective uk/rɪˈspɒn.sɪv/ us/rɪˈspɑːn.sɪv/
反应积极的；反应敏捷的
making a positive and quick reaction to something or someone
a responsive engine 反应灵敏的发动机
a responsive audience 反应热烈的观众
She wasn't responsive to questioning. 她对提问应答很勉强。
The disease has proved responsive to the new treatment. 事实证明，新疗法对这种病很有效。
Opposite: unresponsive