淋巴结结核
A.肝细胞浆的Mallory小体B.大块瘢痕呈灰白色,半透明状,质韧C.肾动脉增厚,均质红染,管腔狭窄D.虎斑心E.间质黏多糖蓄积
参考答案:A
一元二次方程x2-5x+1=0的两根为x1、x2,则数组(x1+x2,x12+x22)是( )
A.(-5,23)
B.(5,23)
C.(-5,21)
D.(5,21)
Thomas Edison never gave up. During his lifetime, he had 1,093 _____. [ ]
A. instructions
B. competitions
C. inventions
D. injections