企业应当妥善保管食品生产许可证证书,因毁坏或者不可抗力等原因造成生产许可证证书遗失或者无法辨认的,应当( ),同时报省级质量技术监督部门。
参考答案:及时在省级以上报纸上刊登声明
The reason______ he gave for being absent from school was ______ he had to attend his sick mother at home.
A.which; because
B.why; because
C.不填; that
D.why; that
绒毛膜癌能够转移到下列那些部位
A.肺
B.脑
C.肝
D.肾
E.以上全部