小题1:A
小题1:C
小题1:B
小题1:细节题：从第三段的句子：In the eight-year study, people’s daily diet, exercise habits, and blood pressure were studied in 19,357 persons aged 35 to 65.可知科学家花了八年时间发现巧克力的好处的，答案是A
小题1:细节题：从第三段的句子：people’s daily diet, exercise habits, and blood pressure were studied in 19,357 persons aged 35 to 65.可知答案是C
小题1:细节题：从第一段的句子：However, the study advises people not to eat too much chocolate, because too much chocolate is bad for our bodies.可知巧克力对我们有好处，但我们不能吃太多。答案是B