Our criminal justice system is inherently flawed because it relies on amateur juries of decent citizens, who lack the perspective to understand the criminal mind. To have an effective criminal justice system would require professional juries, who would be able to deal with these criminals in a way that gets results.
The argument above depends on which of the following assumptions ？（）

A. Professional jurors will be more reliable than amateur jurors because they will not attempt to avoid jury duty.

B. Professional jurors will not be burdened by the biases against race, gender, and religion that amateur jurors bring into the courtroom.

C. Dealing with criminals in a way that gets results requires an understanding of the criminal mind.

D. No amount of professional training can impart the perspective of the criminal mind necessary to run an effective criminal justice system.

E. Jurors possessing the perspective to understand the criminal mind are unfit to serve on a jury, because they are likely to be criminals.

从肘静脉注入对比剂后，最迟到达的部分是（）

A.上腔静脉

B.有心房

C.有心室

D.降主动脉

E.左心室