引起沙门菌属食物中毒的好发食品是
A．家庭自制发酵食品B．鱼、虾、蟹、贝类C．剩饭D．肉类、禽类、蛋类E．以上都不是
参考答案：D
.
Most of us know we should cut down on fat．But knowing such things isn’t much help________it
comes to shopping and eating．
A．since
B．as
C．after
D．when
