题目内容:
It would be difficult to prevent and control pig ascariasis but clearance of Ascaris suum eggs in the surrounding is a key step.
A.正确
B.错误
参考答案:【答案仅供学习,请勿对照自行用药等】
It would be difficult to prevent and control pig ascariasis but clearance of Ascaris suum eggs in the surrounding is a key step.
A.正确
B.错误