制备抗体与酶结合物常用的两种方法是()交联法和()氧化法。
参考答案:戊二醛;过碘酸盐
句型转换 (每小题1分,共5分)
小题1:How is the weather in Yichun?(同义句)
___________ the weather____________in Yichun?
小题2:He goes to school on his bike.(同义句)
He__________ ____________ bike to school.
小题3:Do it like this.(否定句)
___________ ___________it like this.
小题4:It’s about twenty minutes’ walk from my home to school.(划线提问)
___________ ___________is it from your home to school?
小题5:You can’t eat in class.(同义句)
___________ ___________in class.
行政立法的主体是( )。
A.国家机关
B.国家权力机关
C.国家行政机关
D.国家权力机关和行政机关