1. She feels insulted at his display of selfishness when he shows a lack of interest at learning her name.2. Morals are declining more and more each day. Every day one can see more displays of selfishness, lack of respect for others, lack of concern for our environment.3. Scientists study the phenomena of nature.
 display phenomenon人為特質的現象就可用 display，例如自私的現象可說 display of selfishness. 而自然的現象可用 phenomenon.
這是一個連環問題: 燃燒石油導致二氧化碳增加，二氧化碳增加導致溫室效應，溫室效應導致冰層融化、海平面上升。 (請填空)
This is a chain of problems. Burning oil leads to increase in carbon dioxide, which leads to the greenhouse effet, which leads to melting of glaciers, which leads to rising sea levels.