题干

一个几何体的三视图如图所示.已知这个几何体的体积为8,则h=(   )

A:1

B:2

C:3

D:6

上一题 下一题 0.0难度 选择题 更新时间:2019-09-27 05:41:25

答案(点此获取答案解析)

B

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阅读理解

                                                                                 World's Wonderful Libraries

    How cool can libraries be in an era of iPads and Kindles Morethan you think. Only if you know where to go.

                                                                                         Central Library

    The Central Library in Seattle,United States is modern and sophisticated. The building is an impressive work of art, which has tourists from around the world paying visits and taking tours. The library offers free self-guided cell phone tours, along with group tours.

    The library holds various art exhibitions, book signings andother events throughout the year.

    Open: Monday-Thursday 10 a.m-8 p.m, Friday-Saturday 10 a.m-6p.m, Sunday noon-6 p.m

                                                                                      Trinity College Library

    The Trinity College Library in Dublin is the oldest library in Ireland, founded in 1592 by Queen Elizabeth I.

    Not only is the exterior impressive, it boasts the largest single chamber library in the world, also known as the Long Room, which contains more than 200,000 of the library's oldest books.

    Various exhibitions and tour are available; admission 9(US 12)

    Open: Monday-Wednesday 9:30 a.m -5 p.m, Tuesday 9:30 a.m -9 p.m,Saturday 9:30 a.m -1 p.m, Sunday closed.

                                                                                    Bibliotheca Alexamdrina

    The Bibliotheca Alexamdrina is the revival(复兴) of theancient Royal Library of Alexandria, which was the largest and most influential library in the Greek world. It was built by Alexander the Great some 2, 300years ago.

    The new library was reborn in 2002 on the shore of the Mediterranean Sea after 10 years of designing, planning and construction.

Along with the standard libraries, there are four museumscovering science, Arabic Calligraphy, the history of printing and the Greekart.

    Open: Saturday-Thursday 9 a.m- 4 p.m.

                                                                                       Stuttgart City Library

    The Stuttgart City Library is controversial. Some say it's innovative, while others say it doesn't match its environment.

     Nevertheless, the library is one of the most interesting buildings in Germany. The design of the cubic facility was influenced by the ancient Pantheon in Rome. It serves as a multi-story meeting space that draws natural sunlight through the roof.

    Open: Monday-Saturday 9 a.m--9 p.m

同类题3

阅读短文,回答问题  
积淀,成就人生的高度
①我国南方湘粤一带有一种毛竹,漫山遍野,质地平凡而拙朴,在它一生最初的五年里,确实很平庸,几乎察觉不到它在生长。在别的竹类争先恐后攀比高度时,毛竹似乎不动声色。但是,当第六个雨季到来时,毛竹终于钻出地面,而后像施了魔法一样,以每天60厘米的速度生长,迅速达到30米的高度,在六个星期内就完成了它一生所要达到的高度,并把它的同类远远地甩在身后,创造了属于自己的神话。为什么会有这样的结果呢?寻本溯源,毛竹最后的快速生长,所依赖的就是前五年的日积月累,它以一种不易被人发觉的方式向地下生根,在五年的时间内伸展出长达几公里的根系。积微成著,蓄势后发,才造就了毛竹的一柱擎天。
②黄山松坚韧傲然,美丽奇特,但生长的环境却十分艰苦,因而生长速度异常缓慢,一棵高不盈丈的黄山松,往往树龄上百年,甚至数百年,根部却常比树干长几倍、几十倍,而正是由于黄山松的根扎得很深,能够汲取岩石深处的养分,才能够坚强立于岩石之上,虽经历风霜雨雪却依然永葆青春。
③毛竹在蓄势后的“魔法生长”,黄山松在风雨中的“气定神闲”,都源于基础的深厚、稳固。正是在无声中积聚了破土而出的力量,才有了毛竹喷薄而出的奇迹,才有了黄山松悬崖峭壁上的从容。
人生又何尝不是如此?如果我们在逆境中也能沉下气来,不被困难吓倒;在喧嚣中也能定下心来,不被浮华迷惑;专心致志积聚力量,也会实现自身的飞跃,成就辉煌的人生。
⑤十九世纪,一个美国男孩靠在火车上卖报纸和雪茄烟为生,可是当旅客们谈起有关投资方面的事情时,他总会全神贯注地听着,他梦想成为一个能预测未来的交易商。为了这个梦想,他长大后整天躲在狭小的地下室里,将数万根的K线一根根画到纸上,并对着这些K线静静地思索、潜心地研究。后来他干脆把美国证券市场有史以来的记录搜集到一起,在那些杂乱无章的数据中寻找规律。整整六年,他集中研究了美国证券市场的走势与古老数学、几何学和星象学的关系,终于发现了有关证券市场发展趋势的最重要的预测方法,命名为“控制时间因素”。于是,他在金融投资生涯中赚取了五亿美元,创造的理论被译成十几种文字,他就是威廉·江恩——世界证券行业尽人皆知的最重要的“波浪理论”的创始人。
其实,生命是一个创造的过程,也是一个积淀的过程,每个人无时无刻不在为自己的人生埋下“伏笔”。在平凡的生活中,我们只有尽可能地积聚力量,不断坚实人生基础,才会在最恰当的时机,散发出耀眼的光芒,顺利地攀登上人生的新高度。