若等腰三角形的一个角为50°,则它的顶角为______.
当该角为顶角时,顶角为50°;
当该角为底角时,顶角为80°.
故其顶角为50°或80°.
故填50°或80°.
可出现脾肿大的有()
A.淋巴瘤
B.伤寒
C.慢性肝炎
D.急性疟疾
E.肝硬化
He was allowed to go swimming _______ he kept near the other boys.
A.on condition that
B.as far as
C.even if
D.as though