BPH的并发症有()
A．膀胱肿瘤
B．膀胱结石
C．急性尿潴留
D．腹股沟斜疝
E．膀胱真性憩室
参考答案：B, C, D
A shark has many () a fish.
A．difference from
B．differences from
C．different with
D．differents with
