组成结核性空洞洞壁的主要成分有()
A．增生的纤维组织
B．干酪样坏死物质
C．大量结核杆菌
D．瘢痕组织
E．结核性肉芽组织
参考答案：A, B, E
In relation to the Labour Law of China:
(b) Describe the conditions under which an employee and the employer may terminate a labour contract during the period of probation respectively. (4 marks)
一块种植花卉的矩形土地如图所示，AD边长是AB的2倍，E为CD边的中点，甲、乙、丙、丁、戊区域分别种植白花、红花、黄花、紫花、白花。问种植白花的面积占矩形土地面积的（）
A.3/4
B.2/3
C.7/12
D.1/2
