菜和水果是纤维的极佳来源。故选A。

【2题详解】

推理判断题。根据文章第四段Eating lots of red and processed meat can increase(增加) your risk of stomach cancer. Red meat includes all fresh and frozen beef, pork and lamb. Processed meat includes ham, bacon and sausage. White meat, such as chicken, is unlikely to increase your risk of cancer.可知，吃加工肉类会增加胃癌的风险，而白肉，比如鸡肉，不太可能增加你患癌症的风险，所以推断出吃鸡肉要比吃香肠更好。故选D。

【3题详解】

推理判断题。根据文章最后两段内容Fat is a necessary part of our diet but high-fat diet can increase our risk of cancer, heart disease and other diseases.可知，脂肪是我们饮食中必不可少的一部分，所以推测出健康的饮食应该包含脂肪。故选C。

【点睛】推理判断题属于主观性较强的高层次阅读理解题，做这类题目时，同学们要严格依据作者所陈述的细节、事实以及作者的措词、态度和语气，找出能够表露作者思想倾向和感情色彩的词句，然后利用自己已获得的相关知识进行推理判断，从而得出符合逻辑的结论。如小题2中就是根据文章第四段Eating lots of red and processed meat can increase(增加) your risk of stomach cancer. Red meat includes all fresh and frozen beef, pork and lamb. Processed meat includes ham, bacon and sausage. White meat, such as chicken, is unlikely to increase your risk of cancer.可知，吃加工肉类会增加胃癌的风险，而白肉，比如鸡肉，不太可能增加你患癌症的风险，所以推断出吃鸡肉要比吃香肠更好。

　　My folks bought their first house in the early 1940s after Dad got a better job in Marquette, Michigan. We lived just inside the city limits in what was still a rural area.

　　In the spring of 1948, when I was 6 years old, my parents bought a calf（小牛）to replace our cow, which had been killed the year before. So one day we drove to a local farm and returned with a white and brown calf we named Tubby.

　　We didn't own a truck, so Tubby rode home in the backseat of Dad's car with my 9-year-old brother, Steve, and me. As you can imagine, the trip was a lot of fun for us kids.

Later that summer, Mom thought it would be cute to take a picture of me sitting