下列哪种病变一般不表现为单侧肾影缩小（）
A.肾梗死
B.肾结核
C.肾血管平滑肌脂肪瘤
D.肾动脉狭窄
E.肾发育不良
参考答案：C
Before the final examination, many students have shown ____ of tension. Some have trouble in
sleeping while others have lost their appetite. [ ]
A. anxiety
B. marks
C. signs
D. remarks
