新鲜尿液具有强烈的氨味可能是()
A．肾结石
B．膀胱炎
C． * * 炎
D．慢性肾盂肾炎
参考答案：B
My brother is really ______. He often works in his office far into the night.[ ]
A. outgoing
B. hard-working
C. friendly
D. quiet
物体的质量=物体的密度（ρ）（）物体的体积（V）。
A、÷
B、×
C、+
D、-
