题目

不能比较氮和氧非金属性相对强弱的是 A．氨气在氧气中燃烧生成氮气           B． NO中N为+2价，氧为－2价 C．沸点：H2O>NH3                     D．热稳定性：H2O>NH3 答案：CLots of folks don't think about what they eat over the holiday season until January, when they stare sadly at the number on the scale and then hurry off to hit the gym, join Weight Watchers or pick up the latest diet book.It doesn't have to be that way. Health experts say you can still enjoy the holidays."It's OK to indulge（沉溺）, but it doesn't mean you have to gain weight," said Karen Ansel, a New York-based registered dietitian and a spokeswoman for the American Dietetic Association (ADA). Jessica Crandall, a registered dietitian from Denver who's also an ADA spokeswoman, added that gaining weight during the holidays and then working hard to lose it again is not good for a person's body. For starters, people interested in maintaining their weight during the holidays should keep eating on a regular schedule, the two dietitians said. Research has shown that people who skip meals -- particularly breakfast -- end up eating more throughout the day. "Try and stick to consistent meal times so you can avoid being overly hungry," Crandall said. "When you're overly hungry, you can make some bad decisions regarding what you eat. Don't starve yourself during the day waiting for that party at night -- because you'll eat too much or overeat."Ansel suggests that you think now about the foods you really enjoy and plan to focus on those while eating less of more common fare.Be careful, too, about alcohol intake, for a couple of reasons. Alcoholic drinks, particularly the fancy ones handed out at holiday time, tend to come loaded with calories. "It's usually what you're adding to a drink that contains the calories," Crandall said. Also, if you're drunk, you might forget to watch what you're eating. "It totally lowers your inhibitions（压抑）," Ansel said.Other holiday eating tips, suggested by Crandall and Ansel, include:?Eat lots of vegetables, and eat them first before moving on to the other items on your plate.?Recognize that many holiday extras, like cheese or cranberry sauce, come loaded with calories. "If those aren't your favorite foods, don't put them on your plate," Crandall said.?If your favorite food has a lot of calories, be sure to minimize your portion. "Two bites cure the craving," Crandall said. "After that, you're just really feeding your old habits. ?After a big holiday meal, don't sink into a chair or couch. Go for a walk outdoors or participate in some other activities that help burn off some of the calories you've just eaten.【小题1】Both Karen Ansel and Jessica Crandall ________.A．think highly of the latest popular diet bookB．like going to the gym oftenC．think trying to lose weight isn’t good for a person’s bodyD．are registered dietitians and work for ADA【小题2】Ansel asks people wishing to keep slim not to skip meals because _________.A．it will do harm to their stomachs.B．being overly hungry will make them feel not wellC．it may make them eat moreD．it might let them make bad decisions on important occasion【小题3】Why does Crandall advise people wanting to lose weight not to drink wine?A．Because if they’re drunk, they can watch what they eat.B．Because it will make it hard for their body to burn calories.C．Because wine itself contains many calories.D．Because it will make them feel more stressed.【小题4】Which of the following is the proper way to keep slim according to the passage?A．Eating more vegetables than rice and other food. B．Eating more cheese or cranberry sauce.C．Never eat food with a lot of calories.D．Sitting less and walking more after meals.【小题5】The passage mainly talks about __________.A．some advice on holiday eatingB．how to keep slimC．the problems of fat peopleD．what to do in holidays