On June 1st, 2015, the “Oriental Star(东方之星号)” turned upside down. People all over the world ______.
A:shocked
B:were shocking
C:were shocked
— Are those my pencils?
— Yes, ______.
举重运动员在举杠铃前常用“镁粉”搓手,这种镁粉的主要成分是MgCO3它属于 ( )