小题1:D
小题2:D
小题3:D
小题4:C
小题5:D
小题1:细节理解题，根据文中语句“Scientists want to find out if (是否) dogs can see colours. When the scientists give the dogs food, they show them a certain colour every time.”理解可知。
小题2:细节理解题，根据文中语句“The dogs get ready to eat when they see this colour. The scientists then show the dogs another colour. Again the dogs get ready to eat. The colours are all the same to them.”理解可知。
小题3:细节理解题，根据文中语句“Colours are not all the same to monkeys.”理解可知。
小题4:细节理解题，根据文中语句“if we put food in a red box, and do this every day, a monkey will always go to the red box to get food.”理解可知。
小题5:细节理解题，根据文中语句“For example, if we put food in a red box, and do this every day, a monkey will always go to the red box to get food. If we put food in a blue box, the monkey won’t go to it.
”理解可知。