如图所示，实线是沿x轴传播的一列简谐横波在t=0时刻的波形图，虚线是这列波在t=0.05 s时刻的波形图。已知该波的波速是80 cm/s，则下列说法中正确的是

A．这列波有可能沿x轴正向传播

B．这列波的波长是10 cm

C．t=0.05 s时刻x=6 cm处的质点正在向下运动

D．这列波的周期一定是0.15 s

The global financial crisis (金融危机) has made many people _____ their money. [ ]

A. to care for

B. took care of

C. be careful with

D. to be cared about