重型再生障碍性贫血患者常表现为全血细胞减少。
参考答案:对
在矩形ABCD中,AB=5 cm,AC=13 cm,这个矩形的面积是( )cm2
The Dragon Boat Festival is celebrated by________ races. [ ]
A. boating
B. running
C. swimming
D. relay