1. --- An explosion at nuclear power plant in Japan caused several workers injured.
--- Yes, _________ news came as ________ shock to us all.
A. the; the B. /; / C. /; a D. the; a
2. — Xiao Guang and Xiao Ming are twin brothers.
— ______ I took Xiao Guang for Xiao Ming the other day.
A. No doubt B. Of course C. No wonder D. In fact
