中国引起肉毒梭菌食物中毒最常见的原因是( )。
A.肉制品B.鱼制品C.肉毒梭菌产生的外毒素D.肉毒梭菌产生的内毒素
参考答案:C
What time do you think ?[ ]
A. will Betty come here
B. Betty will come here
C. is Betty coming here
D. can Betty get here