中药说明书格式中的“主要成分”是指( )A．主要药味 B．有效部位 C．有效成分

阅读理解。

     Washington D.C. is the capital of the United States. It's the center of national government. It's a busy, working city with a large population. But what is more, Washington is also a city of history and culture. It is

  home to many famous and interesting public buildings and monuments, many of which are connected with

  the federal government.    

     Washington was created in 1790, when Congress (the highest lawmaking body of the United States)

  decided to place the nation's new capital in the east of the country. It was built half way between the

 northern and southern states of America. And of course it was named after George Washington, the first

 President of the United States.

     There are many tourist sights in Washington. Perhaps the most important tourist sight is the Capital

 Building. This is the house of the Congress. Another world-famous building in Washington is the White

 House. This is the home and office of the President of the United States. Most visitors are, however,

  surprised by how small the White House actually is.

     Washington is also a great cultural city. The Library of Congress contains one of the largest library

  collections in the world. The Smithsonian Museum holds the nation's largest collection of cultural

 materials. And the John F. Kennedy Center is a famous center of art and culture. It has many great

 musical and theatre performances throughout the year.

1. From the passage we know that Washington is situated in _____.

    A. the east, on the middle point from north to south of the country

    B. the center of the U. S. A.

    C. the east of the U. S. A.

    D. the east and halfway away from the north

2. The passage mentions _____ buildings.

    A. six    

    B. five  

    C. four      

    D. three

3. The writer introduces Washington in order of _____.

    A. population, history and culture  

    B. history and culture

    C. general introduction, history, sights and culture

    D. general introduction, history, sights, buildings and culture

有关接缝的处理，下述正确的是( )。

A．纵缝做成企口缝时，常采用凹形模板，先浇筑混凝土板凸的一边

B．纵缝做成企口缝时，常采用凸形模板，先浇筑混凝土板凹的一边

C．固定后的传力杆必须平行于板面，误差小于1mm

D．胀缝传力杆的活动端，须设在缝的中间部位

用C语言编写的代码程序（ ）。

A．可立即执行

B．是一个源程序

C．经过编译即可执行

D．经过编译解释才能执行

盗用、假冒他人姓名的，应当认定为侵害姓名权的行为。( )

表单控件工具栏的作用是在表单上创建（ ）。

A． 文本

B． 事件

C． 控件

D． 方法