题干

近似数0.0386精确到________位有________个有效数字.(      )

A:千分,3 

B:千分,4 

C:万分,3

D:万分,4

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答案(点此获取答案解析)

C

同类题1

阅读下文,回答问题。

                                                                                          孩子,请系好鞋带

    那时,我还在读初一。学校每到年底都会组织游园活动庆祝新年的到来,记得那年的游园活动特别热闹,游戏很简单,似乎所有的人都能中奖,所以奖品很快就剩得不多了。

    我终于也挣得了一张票,便兴冲冲去领奖。领奖处挤满了人,每个人都希望得到最后几份奖品,我也不甘示弱往前挤。高高的窗台,狭小的窗口,发奖的人根本看不见领奖人的脸,只能随意地从那些伸进窗口的挥舞着的手中接过奖票,再递给奖品。突然间,我感觉手心沉甸甸的,是一份奖品!还来不及高兴,旋即又感到手里轻飘飘的了——奖品被别人抢了!我忙抬起头四下搜寻,只见身旁一个大男孩正在冲我得意地笑。

     我冲他喊道:“把奖品还给我!”他边走边嚷:“每个人都有奖票,谁能抢到就是谁的了,凭什么还给你!”我拽住他的衣角,近乎哀求:“我先拿到的,给我吧。”

     他猛地推开我,没想到竟把我趔趄在地,他一溜烟跑掉了。

     从地上爬起来,我再也忍不住委屈大哭起来。我边哭边走向办公区,这时我本能地想到了母亲,她是这所学校极有权威的老师,她一定能帮我!

     母亲听我哭哭啼啼叙述完一切,沉默了半晌才说:“孩子,先系好你的鞋带吧。”我低头一看,真的,鞋带不知在什么时候已松开了。我迅速系好鞋带,然后期待母亲帮我要回奖品,没想到她却平静地说:“走吧,我们回家……”

     这件事早已过去,我始终没能要回那份本该属于我的奖品,为此,心里不止一次埋怨母亲。然而,随着渐渐长大,十多年来也曾经受了许多成败与得失,现在我才恍然明白,当年的母亲用心良苦!

     她让我系好鞋带,她在我因得不到奖品而懊恼的时候,让我系好鞋带,因为,我确实应该这样做。如果我任由自己哭闹,我可能会一辈子对此事耿耿于怀,无法释然。生活中本来就有好多我们想要的东西却无法得到,我们又怎可以要求自己每次都能被满足呢?母亲这样做其实是想让我学会坚强——当生活不能如愿以偿或者不尽人意时,不是一味地计较和埋怨,而是一如既往地做自己应该做的事,保持一份恬淡心情对待生活。

     我知道,命运给予我们的磨难将远不止是失去一份奖品;我同样知道,对待磨难也并非系好鞋带就难解决这么简单,但我明白生活的真谛就在于此——无论发生了什么事,不气馁,不自怨自艾,永远做自己应该做的事,永远向前看,终有一天,我就能用生命的带子系住幸福。                             

同类题4

阅读理解

    Black History Month is also known as the African-American History Month. It is celebrated all over the United States of America and Canada in the month of February, while in the United Kingdom it is celebrated in October. Each and every school and university conducts various activities to make the generation aware of the importance that African-American history holds in the nation. The electronic media is filled with themes inrelevance to the occasion, and many activities are carried out across the country to remember the contribution made by African-American citizens in the development of this nation.

    Black History Month was first started bya famous African-American historian Dr. Carter G. Woodson in the year 1926. February was chosen as the month to celebrate the African-American history because it was the birth month of two of the most highly valued people among African-Americans. These were President Abraham Lincoln, who freed the slaves, and Frederick Douglass, who was also the first vice presidential nominee (被任命者) amongAfrican-Americans. Initially, Black History Month was known as the “NegroHistory Week”. This was Dr. Woodson's attempt to encourage awareness amongcitizens about the contribution of African-Americans towards the building of the nation. It was only in the early 1970's that the name “Negro History Week”changed to “Black History Month”. And later, in the year 1976, the entire monthof February was declared to be the National African-American History Month, orthe Black History Month.

Every year, National African-AmericanHistory Month is celebrated by many activities with various ideas and themesfor the younger generation. In 2013, Black History Month celebrates the 50th anniversary of the March on Washington at which Martin Luther King, Jr. gavehis famous speech “I have a dream”. It also marks the 150th anniversary of the Emancipation Proclamation (解放黑奴宣言). The theme for Black History Month in 2014 is “Civil Rights in America” remembering the important milestones by African-Americans and others in the battle for civil rights and equaltreatment under the law.