题干

如果我们把不同的商品放在一起,会发现这些商品的价格各不相同,有的高、有的低;如果我们把视线放在同一商品上,会发现这种商品的价格也不是固定不变的,有时高、有时低。对此认识正确的是(  )

A:本质是一样的,都是由商品的社会必要劳动时间不同造成

B:本质是一样的,都是由市场供求关系的变化引起的

C:本质不同,前者是由价值量不同造成的,后者是由供求关系变化引起的

D:本质不同,前者是由供求关系变化引起的,后者是由价值量不同造成的

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答案(点此获取答案解析)

C

同类题5

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    The percentage of women working in technology has decreased since the 1990s.Women make up only a quarter of all jobs in computer and math professions.I think all girls should learn how to code(编码).Here is why.

    If we want to be part of one of the fastest growing job markets out there,we need to jump on board!Over the last ten years the growth in STEM jobs has been three times faster than that in non-STEM fields.Women will never be able to keep up with men in the professional workplace if we don't join the fastest growing fields.

    Just like hundreds of years ago,people who could read and write controlled the future,and now those who are at home with technology will shape the world we live in.You can use coding in every aspect of your life,even if you don't enter a field that involves coding.You cant use coding to create your own website or to program games.You can animate your YouTube videos,or make graphic designs.Programming is now being used in every profession, including medicine and airplane design.

    You can have fun creating your own website,programming a robot to get the remote for you when you're lying on the couch,photoshop pictures to change the color scheme to something better than the Instagram filters,and so much more.Coding allows you to realize your wildest dream,and create anything you can imagine.Coding allows you to rule the world.

    It's not very hard to learn to code.You could learn to code on YouTube,in the Girls Who Code club;you could take a free course online on Code Academy;you could even just Google how to code.

You learned to read,you learned to drive-now learn to code.