问题 多项选择题

β-内酰胺类抗生素经水解后用以测定含量

A.生物效价法

B.碘量法

C.中和法

D.汞量法

E.分光光度法

答案

参考答案:B,D,E

改错题

单句改错。(每句有一处错误,请改正。)

1.There have eight oranges on the desk.                                                        

2.Alice and I are in a same school.                                                                

3.Is that bike his or your?                                                                             

4.This photo look like Tom's.                                                                        

5.They are woman teachers in our school.                                                      

6.Can he looks after his little brother?                                                             

7.I visiting my grandparents now.                                                                  

8.How's the weather in Chengdu? It's cloud.                                                   

9.I think he isn't so great.                                                                              

10.I can go shoping, and nobody knows me.                                                   

单项选择题 A1/A2型题