题干

下列有关叙述正确的是(   )

A:化学变化的同时总伴随着能量变化

B:需加热才反应的一定是吸热反应

C:在常温下就能进行的反应一定是放热反应

D:反应物的总能量大于生成物的总能量的反应是吸热反应

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A

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    Your house may have an effect on your figure . Experts say the way you design your home could play a role in whether you pack on the pounds or keep them off . You can make your environment work for you instead of against you . Here are some ways to turn your home into part of diet plan.

    Open the curtains and turn up the lights . Dark environments are more likely to encourage overeating , for people are often less self-conscious(难为情)when they're in poorly lit places-and so more likely to eat lots of food . If your home doesn't have enough window light, get more lamps and flood the place with brightness.

    Mind the colors. Research suggests warm colors fuel our appetites. In one study, people who ate meals in a blue room consumed 33 percent less than those in a yellow or red room . Warm colors like yellow make food appear more appetizing , while cold colors make us feel less hungry . So when it's time to repaint, go blue.

    Don't forget the clock-or the radio. People who eat slowly tend to consume about 70 fewer calories(卡路里) per meal than those who rush through their meals. Begin keeping track of the time, and try to make dinner last at least 30 minutes, And while you're at it, actually sit down to eat. If you need some help slowing down, turn on relaxing music. It makes you less likely to rush through a meal.

    Downsize the dishes. Big serving bowls and plates can easily make us fat. We eat about 22 percent more when using a 12-inch plate instead of a 10-inch plate. When we choose a large spoon over a smaller one ,total intake(摄入) jumps by 14 percent. And we'll pour about 30 percent more liquid into a short, wide glass than a tall, skinny glass.