题干

在一定条件下,RO 3 与R可发生反应:RO 3 +5R+6H+═3R2+3H2O,下列关于R元素的叙述中,正确的是(   )

A:元素R位于周期表中第ⅤA族

B:RO 3 中的R只能被还原

C:R2在常温常压下一定是气体

D:若1molRO3参与该反应,则转移的电子的物质的量为5mol

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D

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    William Shakespeare is the greatest English writer 0f all time. Also Shakespeare was an actor and famous poet. The Sonnesls(十四行诗)and Romeo and Juliet are almost known in every comer of the world.
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    Shakespeare's work also has a big influence on the English language. Shakespeare was said to have had a huge vocabulary. His works included more than 30,000 different words. And he is master of words. He created about l,700 English, including everyday ones like "lonely", "hurry" and "critical".
    There are over 400 films and TV dramas adapted(改编) from Shakespeare's work. He wrote 400 years ago and his English was very different from that of today, but it doesn't affect his popularity. His plays have been translated into every major language and are performed more often than any other playwright.  Shakespeare is not of an age, but for all time.
Enjoy some of Shakespeare's works.
Romeo and Juliet
    Romeo and Juliet fall in love with each other when they meet at a ball. But unfortunately, their families are long-standing enemies and try to prevent the young lovers form being together. In order to stay with Romeo, Juliet takes medicine and pretends to be dead. But Romeo doesn't know and thinks Juliet has truly died. He kills himself. When Juliet wakes up, it is too late.
Hamlet
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At this moment ,Hamlet knows that this uncle killed his father .All of this makes  Hamlet angry and hopeless .The only thing he wants is revenge(复仇) .Although he finally kills his uncle ,he is trapped(陷害) by bad guys and loses his life .
The Merchant of Venice
    Antonio,aVenetian merchant, borrows money from the moneylender Shylock. Shylock said that ifAntonio cannot pay back the money, he will get a pound of flesh(肉)from Antonio. Antonio loses all his business and must pay this terrible price. In order to help Antonio, his girlfriend Portia dresses up as a lawyer. Her wisdom not only saves Antonio but also punishes Shylock.