B．The reasons for success.

　　C．The cause of mistakes.

　　D．Stressful process of research.

　　【解析】　细节理解题。根据第一段的第一句"When students read articles about scientific discovery，they learn what worked."以及第二段的第一句"It can take a long time and many experiments to achieve scientific success."可知，学生在阅读科学发现的文章时，对科学成就的印象最为深刻，故A项正确。

　　【答案】　A

　　2．What can we learn from the passage?

　　A．Robbin is a graduate student.

　　B．Lauren managed to make new drugs.

　　C．Annabelle learns the value of patience.

　　D．Agnieszka expected instant success.

　　【解析】　推理判断题。根据倒数第二段的最后一句"But she's now learning to be patient and not to expect instant success."可知，Annabelle学会了耐心，不期望立即成功；据此可以判断，Annabelle知道了耐心的价值，故C项正确。

　　【答案】　C

　　3．What did Robbin and Annabelle have in common in their experiments?

　　A．They did their experiments independently.

　　B．They realized not all experiments would succeed.

　　C．They assisted graduate students to make new drugs.

　　D．They made severe mistakes in the experiments.

【解析】　细节理解题。根据第三段的最后一句"With time，the teen got comfortable with the idea that every experiment wouldn't succeed."可知，Robbin坦然接受了并不是每次实验都会成功的事实；根据第四段的最后一句"But she's now learning to be patient and not to expect instant success."可知，Annabelle学会了耐心，不期望立即成功；据此可知，Robbin和Annabelle的共同点是她们都意识到了不