问题 单项选择题

物种差异影响化合物的毒性的例子是()

A.大鼠、小鼠、狗体内发生N-羟化,N-2-乙酰氨基芴与硫酸结合变成致癌物

B.猴子体内可发生N-羟化,N-2-乙酰氨基芴与硫酸结合变成致癌物

C.家兔体内可发生N-羟化,N-2-乙酰氨基芴与硫酸结合变成致癌物

D.豚鼠体内可发生N-羟化,N-2-乙酰氨基芴与硫酸结合变成致癌物

E.猫体内可发生N-羟化,N-2-乙酰氨基芴与硫酸结合变成致癌物

答案

参考答案:A

问答题

下面是婷婷参加期末考试取得的成绩统计图,请你读图后回答问题。

1.婷婷考得最好的科目是              ,考得最差的科目是                 

2.你可以向婷婷介绍哪些好的学习方法?

                                                                                                                                                       

3.请你帮助婷婷拟定一个简要的学习计划。

                                                                                                                                                      

                                                                                                                                                    

                                                                                                                                                    

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