1. The Belgian city of Ghent has declared Mondays meat-free days.（） 2. The livestock sector has become one of the top two or three most significant contributors to the most serious environmental problems.（） 3. The author is a complete vegetarian.（） 4. According to the passage, people who eat less meat will be easily sick.（） 5. There aren't many vegetarian dishes in the restaurant mentioned in the passage. （）