"One-third effect" means that when human beings make decisions and choices, when there are 3 or more options, they will make wrong judgments due to the limitations of traditional thinking. The limitation of thinking is that people are facing the same probability in many cases. When choosing an option, although knowing that the chances of each choice are the same, psychologically, the first and last options will always be resisted, so the choice will usually be made in the middle option. Based on the above definition, which of the following options are "one-third effects"? ['Students with the highest potential in middle and upper classes in middle school.', 'The stores with the highest sales volume on commercial streets are not at both ends of the street.', 'Due to too much pursuit of perfection, there are more and more "leftover men" and "leftover women".', 'In the multiple-choice part of the English test, Guess all the last items.']