摆线的一拱（0≤θ《2π长度为（）。 A．4a B．6a C．8a D．10a

下图中，甲、乙两大洲的分界线是

A．白令海峡

B．巴拿马运河

C．苏伊士运河  

D．乌拉尔河

阅读理解。

     The Chinese-born American architect Ieoh Ming Pei is one of the most creative architects of our times.

He has incorporated both eastern and western ideas into his designs.

     Ieoh Ming Pei was born in Guangzhou, China on April 26, 1917. His father was a famous banker. In 1935,

at the age of 17, he came to the United States to study architecture at Massachusetts Institute of Technology.

In 1942, he entered the Harvard Graduate School of Design.

     In 1964, Jacqueline Kennedy selected Pei to design the Kennedy library. After that he became well-known

all of the world. People named it one of the Ten Best Buildings in the United States. In 1968, Pei started work

on the East Wing of the National Gallery of Art, in Washington D.C.. Over one million people visited the

building during its first 50 days in existence.

     Following the East Wing project Pei's fame has continued to grow widely. In 1983, French President

commissioned (委任) Pei to help make the Louvre more modern. Ten years later, the completion of Pei's glass

pyramid at the Louvre created a new historic landmark for Paris. Pei described it as, "the greatest challenge

and greatest accomplishment of my career." At Fragrant Hill, a 300-room hotel in the Chinese capital, Pei has

attempted to bring to his native China his often-quoted "third way of making buildings." Avoiding both a

complete copying of traditional Chinese motifs (特色) as well as the modernism of the West, Pei has managed,

at Fragrant Hill, to make one of his most eloquent (有说服力的) statements.

     Pei has designed nearly 50 projects in the United States and abroad. About half of these projects have won

major awards. Pei has been awarded the highest honors from nations over the world. In 1990, Pei was

awarded the Medal of Freedom by President George Bush for his contributions to world peace and service to

the US government.

1. Which is the right order of the events of Ieoh Ming Pei?

    a. Pei started work on the East Wing of the National Gallery of Art, in Washington DC.

    b. Ieoh Ming Pei entered the Harvard Graduate School of Design.

    c. The completion of Pei's glass pyramid at the Louvre created a new historic landmark for Paris.

    d. Ieoh Ming Pei was selected to design the Kennedy library.

    e. Ieoh Ming Pei was born in Guangzhou.

    f. Pei was awarded the Medal of Freedom by President George Bush.

    g. Ieoh Ming Pei came to Massachusetts Institute of Technology.

    h. French President commissioned Pei to help make the Louvre more modern. [ ]

A. e-g-d-b-a-h-c-f

B. e-g-b-d-a-h-c-f

C. e-g-b-d-h-a-c-f

D. e-g-b-d-a-h-f-c

2. The underlined word "incorporate" can be replaced by _____. [ ]

A. divide

B. combine

C. separate

D. part

3. It was _____ that Ieoh Ming Pei became world-famous. [ ]

A. after the completion of Pei's glass pyramid at the Louvre

B. after he designed East Wing of the National Gallery of Art, in Washington DC

C. after he designed the Kennedy library

D. after he designed the Fragrant Hill

4. _____ is an excellent building that shows both the traditional Chinese motifs and the modernism of the West. [ ]

A. Fragrant Hill

B. Pei's glass pyramid at the Louvre

C. The East Wing of the National Gallery of Art

D. Kennedy library

5. We can infer that about _____ of Ieoh Ming Pei's projects have won major awards.[ ]

A. 50

B. 15

C. 25

D. 35

如果一个建设工程的目标失控，则对其项目管理进行诊断，首先应分析其( )方面存在的问题。

A．管理方法

B．沟通

C．管理工具

D．组织

个人购买住房需要缴纳哪些税？（）

A、契税和印花税

B、印花税和土地使用税

C、契税和营业税

D、印花税和房产税

下为突触的亚显微结构图。

①是（），是神经元的突起。它的静息电位是（）。

②是一种细胞器叫（），可以供能。