题干

历史上贝壳、牲畜、布匹等都曾充当过商品交换的媒介,但随着商品交换的发展,“贵金属”长期占据货币的宝座。下面对此认识正确的是(  )

①“贵金属”是充当一般等价物的唯一商品 ②货币是商品交换发展到一定历史阶段的产物 ③“贵金属”固定地充当一般等价物时,货币产生 ④所有充当过商品交换媒介的商品都是货币的替代物

A:①②

B:③④

C:②③

D:②④

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答案(点此获取答案解析)

C

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    Living a more simple life can improve how we think, feel and move around in the world. Here are ways to simplify your life while creating space for happiness.

    Give up your negative thoughts. As humans, we spend a lot of our time being caught up in negative thoughts that brings nothing good into our lives.____ They can grow rapidly and cause unhappiness and do nothing to improve our quality of life.

    Reduce the amount of screen time____ While watching TV and endless YouTube videos or playing computer games can be a nice way to relax, too much can have a negative influence on your lives.

    Cut down on social media____ They say they feel less confident after comparing their lives against those of their online friends. So simplify your life by cutting down on social media-not only for your own health of mind but to stop the endless checking every several minutes.

    ____ In the effort to make yourselves better people and improve yourselves, you often set goals but having too many goals can prevent you from achieving them.

    Eat Fewer Unhealthy Foods____Cutting down on bad foods will not only help you feel much better and give you more energy.

A. Reduce the number of your goals.

B. Negative thoughts are much dangerous.

C. Many people feel their lives are worsened by it.

D. You can make your own healthy food and tasty meals.

E. Learn to choose to think and see the positives in life.

F. Make an effort to remove some unhealthy foods from your diet

G. We spend so much time either staring at a computer or the TV.