食物不耐受是（）
A.特殊食物蛋白引起的异常免疫反应
B.Ⅰ型和Ⅳ型变态反应
C.对食物发生异常的生理反应
D.食物消化不良
E.细菌毒素所致
参考答案：C
_____ number of foreign guests were invited to the meeting, but _____ of 20 foreign guests didn't turn up.[ ]
A. A, totally
B. The, in total
C. A, a total
D. A, in all
“杜鲁门主义”的实质是干涉他国内政。( )
