1. A survey conducted by an organization found that thirty percent of visitors to Taiwan would buy pineapple cakes as gifts for their friends and relatives.2. Before returning to the U.S. from Taiwan, she bought a mini model of Taipei 101 as a souvenir.
 gift souvenir伴手禮指送人的禮物，通常是吃的，用 gift 很貼切。而 souvenir 指紀念品，通常不是吃的，通常是留給自己的。
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 effect, which leads to meling of glaciers, which leads to rising sea levels.