Considering the age and his family’s poor living conditions and environments, he was not punished by the police as he should have been.

A. the police did not punish him as he should be
B. the police hadn’t punished him as he should have been
C. the police didn’t punish him as they should have done
D. the police hadn’t punished him like they should have done

海豚链球菌区别无乳链球菌的生化特性是（）

A.不分解马尿酸+水解淀粉

B.不分解马尿酸+不水解淀粉

C.分解马尿酸+水解淀粉

D.分解马尿酸+不水解淀粉