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
下列选项中,对诗词理解有误的一项是( )
____,____。
____,____
如图,在三棱柱ABC﹣A1B1C1中,AA1⊥平面ABC,∠ACB=90°,CA=CB=CC1=1,则直线A1B与平面BB1C1C所成角的正弦值为____