下列方程中,有实数根的是( )
A:x=﹣2
B:x2+1=0
C:11+x=1
D:x2+x+1=0
The Smiths____want to go to Sanya____Kunming.
It is said that his new book consists of nine chapters.
图为世界某区域图,读图回答下列各题.