It is no longer as easy as it once was to choose what to eat．Our eating habits have changed，so has our way of life，and what we need for our bodies is also different．Traditional diets often have too much fat．So we had better learn to make the right choices about what and how we eat．

When we choose what to buy and eat，we had better think whether the food will give us the nutrients we need．Some nutrients help build our bodies and make them stronger．We eat fish，meat and beans because the nutrient in them is good for our muscles．We choose eggs，milk and other dairy products（奶制品），which are good for our bones and teeth．We eat bread，rice and noodles to get carbohydrates （糖类） from them．We choose vegetables and fruits get Vitamins，fiber and minerals．

But the choice we make are not just about nutrition（营养）．Many today choose what to eat according to their beliefs．Some people become vegetarians（素食者） because they believe it is healthier not to eat meat or they think we should not kill animals for food．

66．It is not easy to choose what to eat nowadays because　　．

A．our eating habits have changed    

B．our bodies are different

C．our way of life has changed       

D．Both A and C

67．If you want to keep your bones strong and healthy，you had better choose　　to eat．

A．fish and meat   

B．meat and beans    

C．eggs and milk    

D．vegetables and fruits

68．What does nutrients mean？　　

A．蛋白质    

B．营养物质    

C．脂肪    

D．钙

69．Some people don't eat meat because　　．

A．they don't like animals   

B．they believe animals should be protected

C．they don't meat         

D．they think meat is not safe

70．We can probably get this information from a guidebook（指南）　　．

A．for diets   

B．for medicines    

C．for travelling    

D．for cooking．

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