题干

如果一个电子的德布罗意波长和一个中子的相等,则它们的(   )也相等.

A:速度

B:动能

C:动量

D:总能量

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答案(点此获取答案解析)

C

同类题1

阅读理解

B

    These days, young people in some English-speaking countries are speaking a strange language, especially when communicating on social media.

    Look at these words chosen by The Washington Post: “David Bowie dying is totes tradge,” and “When Cookie hugged Jamal it made me totes emosh.” Or this sentence: “BAE, let me know if you stay in tonight.”

    What on earth do they mean? Well, “totes” is a short form of “totally”. Similarly, “tradge” means “tragic” and “emosh” means “emotional”. It seems that, for millennials(千禧一代), typing in this form is not only time-saving but fashionable.

    As you can see, many millennial slangs(俚语)are formed by so-called “totesing”—the systematic abbreviation(缩写)of words. The trend might have started with “totally” becoming “totes”, but it now has spread to many other English words.

    The origins of other millennial slangs are more complex than “totesing”.“Bae”, for example, has been widely used by African-Americans for years. It can be an expression of closeness with one's romantic partner or, like “sweetheart”, for someone without romantic connection. After pop singer Pharrell used the word in his work, “bae” became mainstream.

    Some people might think millennial slangs lower the value of the English language, but Melbourne University linguist(语言学家)Rosey Billington doesn't agree. She says when people are able to use a language in a creative way, they show that they know the language rules well enough to use words differently. Two other linguists, Lauren Spradlin and Taylor Jones, share the same view. The two analysed hundreds of examples of totes-speak and discovered totesing has complex roots.

    It isn't simply an adult version of baby talk, nor a clever way to minimize your word count. Rather, it is a highly organized system that relies on a speaker's mastery of English pronunciation. It is about sounds, follows sound system of English and has strict rules.

同类题5

    阅读下面四篇短文,从每题所给的A、B、C、D四个选项中选出最佳选项。

D

    Are you an artist interested in selling your crafts(手工艺品)through arts and crafts shows in your area? Are you wondering whether you should get a booth(摊位)at the next big event in your city or if you should start at a small show?

    If you are wondering whether big arts and crafts shows mean you will make more money,you may be in for a big surprise.Generally speaking,a big show does not mean you're going to make a lot of money.In fact,many artists are left with an empty pocket after big arts and crafts events,so you want to consider a few important things before making a decision.

    First of all,consider the subject of the event and whether the product you are selling matches this subject.For example,if you sell modern superhero T-shirts,you're probably not going to do very well at a renaissance(文艺复兴)festival.Your product should match the festival's topic.

    Secondly,ask the festival's organizers how many people are expected to show up.Are your products fit for this market?Will these people be interested in buying your products?These are questions that are important to answer before entering the big show.

    Then always keep in mind that one of the most important things that you can get from a big arts and crafts show is a fan base.Turn each visitor into a fan.Ask them to follow you on your social media accounts like facebook account, so you can continue to sell to them in the future, well after the event ends.

    A lot of artists do not realize they have this valuable and useful condition in their hands.They only focus on selling more products,without seeing that these people could buy more from them in the future if their contact information is collected.After all, sales are about making friends.