—Sure. It's on Center Street.
A:how is the bank
B:how the bank is
C:where is the bank
D:where the bank is
____
现在全世界约有鸟类九千零二十一种.____
下列词语中,有错别字的一组是( )。
如图所示,四边形ABCD中,∠B=90°,AB=2,CD=8,AC⊥CD,若sin∠ACB=13,则cos∠ADC=____.