题干

如图为某反应的部分微观示意图,其中不同的球代表不同元素的原子.下列说法正确的是(   )

A:该反应属于化合反应

B:参加反应的两种分子个数比为1:1

C:各元素的化合价在反应前后未改变

D:1个X分子中有3个原子

上一题 下一题 0.0难度 选择题 更新时间:2019-07-12 12:46:24

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D

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    Everyone, from homeless people to billionaires, is likely to be influenced by stress; there's simply no way to avoid it____Here are five powerful tips for ways to kill stress in almost any situation.

    Eat Healthier

    Though a lot of stress is psychological, there are also plenty of physical factors that lead to this natural human response to noticed danger, In order to relieve stress, make sure you're treating your body right. A big part of this is eating healthier____Anyway, adopting an alkaline(碱性的)diet instead of an acidic (酸性的)one is recommended.

    Wake Up Earlier

    ____However, waking up 15 or 20 minutes earlier each morning may have more benefits than sleeping in. By giving yourself some extra time, you won't feel quite rushed in the morning, which leads to better preparation and more confidence.

    ____

    Since you are never going to remove 100 percent of the stress in your life, one of the best things you can do is let it be one of your motivations. This is what stress is designed to do, after all. The psychological and physical reactions brought on by stress are supposed to heighten our senses and empower us to fight off a threat.

    Watch a Funny Video

    Here is a simple and practical tip: watch a funny video on You Tube, Research shows that seeing something amusing activates the part of the brain that produces calm physiological(生理的)responses. This can lead to less anxiety and more happiness.

    Take Walk Outside

    Whenever possible, make sure you take your walk outdoors____It can improve energy levels and memory by as much as 20 percent.

A. A number of studies are two important keys to good health.

B. Diet and relaxation are two important keys to good health.

C. There are no magic”anti-stress”foods.

D. However, there are ways to reduce the amount of stress you suffer from.

E. Keep Positive Relationships

F. Let Stress Motivate You

G. It is certainly true that the more sleep you get, the less stressed you'll be.