We have to         visit our grandparents this winter vacation because we miss each other very much.

A．back to

B．get back

C．get back to

D．return back

伤口开放时，哪种检查应为禁忌（）

A.视力检查

B.裂隙灯检查

C.超声波检查

D.X线检查

E.CT检查