题目选项分析

Since all swans that I have encountered have been white, it follows that the swans

I will see when I visit the Bronx Zoo will also be white.

Which of the following most closely parallels the reasoning of the preceding argument?

【选项】Since all cases of severe depression I have encountered were susceptible to treatment by chlorpromazine, there must be something in the chlorpromazine that adjusts the patient's brain chemistry