题干

若在某行星和地球上相对于各自的水平地面附近相同的高度处、以相同的速率平抛一物体,它们在水平方向运动的距离之比为2: 7 .已知该行星质量约为地球的7倍,地球的半径为R.由此可知,该行星的半径约为(   )

A:12 R

B:72 R

C:2R

D:72 R

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C

同类题4

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    The wedding tradition of “something old, something new, something borrowed and something blue” has been around for hundreds of years. The tradition of carrying or wearing one of each item is said to bring luck and fortune to the newly married couple. Have you ever stopped to think what the saying really means? What is its origin and what does each item represent?

    The original saying dates back to the Victoria times and states, “something old, something new, something borrowed, something blue and a silver sixpence in your shoe.”

    Something old   A bride may wear or carry something old to represent her continued ties to her family and her old life. Many brides wear a piece of family jewelry as their old item. Some brides wear the wedding dress worn by their mother or grandmother. In many cases, something old may also be something borrowed.

    Something new   Wearing something new is supposed to represent success and hope in the bride's new life and in her marriage. If the bride purchased her wedding dress new, it may represent her new item, but any item that is new may be used. Something “new” is usually the easiest kind to fill.

    Something borrowed   The borrowed item should be something borrowed from a friend that is happily married. It is said that their happiness will rub off on you and bring lasting happiness to your marriage. Some brides borrow an item of clothing, a piece of jewelry, a handkerchief or perhaps a beaded(带珠子的) purse.

    Something blue Wearing something blue dates back to ancient times when a blue wedding dress was worn to represent purity, fidelity and love.

    Silver sixpence   Placing a silver sixpence in the bride's left shoe is said to be a symbol of wealth. This not only refers to financial wealth, but also a wealth of happiness and joy throughout her married life. Since most brides probably don't even know what a sixpence is, this part of the tradition is not used very often in modern times. However, if a bride would like to include it in her wedding, she can purchase a silver sixpence from many companies that sell bridal supplies such as garters(袜带) and invitations.

同类题5

阅读下面的文字,完成下列小题。

竹子就在跟前

沈祖连

    乔迁新居,一家人喜气洋洋。最高兴的莫过于母亲了,她进入客厅,进入卧室,进入厨房,最后来到阳台上。有一个属于自己的阳台,几乎成了母亲的最大心愿,她要在阳台上养几盆花,要在阳台上安一张躺椅,每天能充分地享受阳光,而最实际的是可以在自己的阳台上晾晒衣服,这是老人最最期待的。

    给我找根竹子。”母亲发话了。

    大姐说,“就交给他吧。”

    大姐夫不很乐意,但还是毅然受命:不接受行吗,丈母娘的要求,妻子的命令。再说,不就是一根竹子吗?

    可接受下来,大姐夫才知道自己的荒唐:要在老家,要根竹子,提刀上山,便可手到拿来。可在这大都市里,去哪里找?可怜的大姐夫,骑着自行车,跑了市场,跑了生产资料公司,跑了土产公司,一无所获。

    午时归来,大姐问他要到没有。大姐夫说:

    “还没。我想,用根不锈钢管不是更好吗?”

    “真没用。阿妈不要你的金,不要你的银只要你一根竹子,哪来的这么多废话?”

    “那我下午继续找吧。”

    大姐夫登上楼顶,看到前街有建设工地,正在拆着脚手架,大姐夫心里一高兴,立时跑了过去。一根根卸下来的正是他所要找的竹子。

    大姐夫来到了门口,找到了门卫,递上一根烟,说,“师傅,卖根竹子给我好吗,多少钱呀?”

    “卖竹?我这里不卖竹。”

    “就是那些拆下来的……”

    “那是脚手架用的,不卖。”

    “可我急着用,不瞒你说,我的丈母娘……”

    “不用说了,我明白,你丈母娘要一根晾衣服……”

    “正是。”

    “可我不能卖呀。要不你去找工长吧,”门卫指着里边的一个汉子说,“就是那个戴着黄帽子的。”

    大姐夫来到了黄帽子跟前,叫了声:“工长,你好。”

    “什么事?”

    “我想跟你买根竹子。”

    “没有竹子卖。”

    “这是脚手架,还要搬到其他工地去用。”

    “我只要一根,次一点的也行。你就收回成本费吧。”

    “这可没有先例啊。”

    “看在我们男人的面上。通融一下吧。”

    “可是,我不能让你在光天化日之下扛着一根竹走出去呀。这么吧,你去找我们主任吧。他在办公室。”

    大姐夫在工长的指点下,见到了主任。

    主任是个脸皮白皙的汉子,看上去斯斯文文的,可不想一听到大姐夫说要买他的一根竹子时,却是一副不耐烦:“去去去,买竹子怎么找到这里来了。”

    碰了一鼻子的灰,大姐夫从工地出来,望着一地的竹子,却是一脸的茫然。这样回去,丈母娘问起,怎么是好?

    他在街角点燃了根烟,吸了一口,大脑皮层一下子跳出了个人:老同学李青不是在这个建筑公司任职吗?并且听说已经是个不大不小的部门头头了,好,就找他,不就是一根竹子吗?难道会不给老同学点面子?

    到公用电话亭打了个电话,说是不在家,得晚上才回来。好吧,晚上就晚上,等等吧。

    心里有了点底,大姐夫便昂然地回来了。不过他还是不太敢见丈母娘。

    大姐问:“怎么,还没找到?”

    “有眉目了。”

    “我的天,跑了一天,才有眉目,能告诉我,怎么个眉目吗?”

    “阿英你别说这根竹子,手续还挺复杂的,不过总算找到了建筑公司的一个老同学了,他今晚回来,我估计明早吧,明早准能要到。”

    “什么呀?为了一根竹子,还得托人情,你这人情也用得太廉价了吧。”

    这时,二姐夫骑着摩托车回来了,一听大姐在指责大姐夫,便说,“不就是根竹子吗,也值不了多少钱,大姐夫你说你在哪发现了,告诉我,我去搞掂。”

    “不远,在前街工地上就有。只是……

    “你是说那些刚拆下来的吗?好。”

    二姐夫说着掉转车头,不到5分钟工夫,便扛着一根竹子回来了。

    大姐夫尴尬地问,“怎么我去不卖,你去就卖了?”

    “不就是一根竹子吗?用什么卖不卖的,我扛起就走。”

    “那要是让人抓住了呢?”

    “那就让罚吧,一根破竹能值什么钱的。不过谁管?”

(选自《21世纪微型小说排行榜》,有删改)