如图，在曲轴上悬挂一弹簧振子，若向下拉弹簧振子后释放，让其上下振动，周期为T₁。现使把手以周期T₂匀速转动（T₂>T₁），当振子振动稳定后（   ）

A．弹簧振子振动周期为T₁

B．弹簧振子振动周期为T₂

C．要使其振幅增大，可以增大把手转速

D．要使其振幅增大，可以减小把手转速

The new survey shows that the number of students________computer games has been on the increase

in recent years. [ ]

A. devoted to  

B. related to

C. connected to  

D. addicted to