The pure contact effect is also called the look-only effect, which refers to the phenomenon that the more frequently an individual is exposed to a stimulus, the more he or she likes the stimulus. The pure contact effect is a very simple but very very influencing individual and social preference. The important way. Based on the above definitions, Which of the following are consistent with pure contact effects:. ['Xiao Qin likes to wear brightly colored clothes, and Professor Zhang often notices her in class. During the postgraduate interview, among the students with similar conditions, Professor Zhang finally chose Xiao Qin.', 'Xiao Ke wants to buy a nutritious product for his mother. Facing with an assortment of nutritional products, he chose the brand known on TV for its quality and safety.', 'Xiaofang introduced and met Xiaoli who was tall and handsome. He fell in love at first sight. As the relationship between the two gradually deepened, Xiaofang liked Xiaoli more and more.', 'Xiaoxia sees her favorite star wearing a certain brand of clothes. As a "hardcore fan", she also likes this brand more and more.']