閱讀測驗
       Over the past years, people around the world are concernedabout the issue of global warming. This phenomenon resultsin rising sea levels and worldwide climate changes. As thesea level goes up, the land becomes even scarcer. Theunusual weather pattern leads to the increasing frequenciesof disasters such as hurricanes and typhoons. Undoubtedly,global warming is mainly caused by greenhouse gases.Emission from vehicles is usually associated with greenhousegases. However, scientists have also discovered that meatindustry can be one of the major reasons causing globalwarming. During the process of digestion, livestock canrelease more than one kind of greenhouse gases thatgradually destroy our environment. Of all of gases, someof them are a lot worse than CO2 (Carbon Dioxide).Therefore, one of the most efficient ways to help stopglobal warming is to go vegetarian； that is, havingvegetables as your diet. It is not hard at all to start avegetarian diet. You can be a healthy vegetarian byconsulting a nutritionist or reading books on vegetarianrecipe. If you are determined to make an effort to govegetarian, you will not only benefit from what you eat butalso contribute to the environmental protection.
【題組】48.Which of the following is the major cause of global warming?
(A) Recycling newspapers
(B) Walking to work
(C) Eating plenty of fruits
(D) Emission from vehicles