预防霉菌毒素食物中毒应注意（）烹煮前应洗干净。
A.肉类
B.禽类
C.粮食
D.蔬菜
参考答案：C
I prefer _____ with a pen rather than _____ on the computer, because I type so slowly.[ ]
A. write; type
B. write; to type
C. to write; type
D. to write; to type
特种设备安装、改造、维修施工前，应向（）书面告知后，方可施工。
