哪项不符合Wilms瘤的特征
A.多见于儿童
B.是肾脏的一种恶性肿瘤
C.主要由透明细胞组成
D.易复发
E.可发生转移
参考答案:C
在直角三角形ABC中,锐角A为30°,锐角B的平分线BD的长为8cm,求这个三角形的三条边的长.
Prices are always rising these days. Up to now, the petrol price _______ 20%.
A.increased by
B.increased to
C.has increased to
D.has increased by