A:Someone ate there.
B:Someone ran there.
C:Someone talked loudly there.
已知直线y=x2与双曲线x2a2﹣y2b2=1(a>0,b>0)交于两点,则该双曲线的离心率的取值范围是____
读世界年平均气温图,回答下列问题
.
下列式子中是完全平方式的是( )