在消防应急照明和疏散指示系统中，当消防应急标志灯具的表面亮度小于（）时，应马上进行更

传输延时确定的网络拓扑结构是

A．网状拓扑

B．树型拓扑

C．环型拓扑

D．星型拓扑

海：水

A．写作：小说

B．太阳：光

C．画家：图画

D．旋律：音符

阅读理解

                                 The Beginning of the Civil Rights Movement

     In 1955, bus seats for African Americans and whites were separated in parts of the U. S.. On

December 1,1955, in the city of Montgomery, Alabama, a conflict, or disagreement, started when an

African American woman named Rosa Parks refused to give her bus seat to a white man and go to the

back of the bus. The police took 42yearold Parks to jail.

     The African American community was extremely angry. They had a meeting and decided to work

together to protest discrimination. They agreed to boycott(抵制) the buses on the day that Parks went

to court. The day was a success. Empty buses drove through the streets. The city lost money. The

community decided to continue the boycott. They elected a man named Martin Luther King, Jr. to be

the leader.

     The boycott continued. It was difficult for African Americans to get to work without buses, but they

didn't stop the boycott. The city continued to lose money. Finally, the U. S. Supreme Court decided that Montgomery's bus laws were unfair and gave the African American community equal right. On December 21,1956, the bus boycott ended.

     The Montgomery Bus Boycott was the beginning of the Civil Rights Movement. The movement

eventually led to the Civil Rights Act in 1964, a set of laws that made discrimination a crime. During the

Montgomery Bus Boycott, people worked together to change the government. Today, people in the

U. S. continue to work together for a change. Now hundreds of organizations and community groups

work to protect the rights of U. S. citizens and residents.

1. How is the situation for the black in the U. S. in 1955?

A. They were treated equally.

B. They were treated unfairly.

C. They had no rights to take a bus.

D. They were not allowed to take the same bus with the white.

2. What is the cause of the Civil Rights Movement?

A. Bus seats for African Americans and white were separated in parts of the U. S.

B. Rosa Parks was sent to jail for she refused to give her bus seat to a white man.

C. The African American community had a meeting to protest discrimination.

D. A man named Martin Luther King, Jr. was elected to be the leader.

3. How long did the boycott continue?

A. Less than a year.   B. Less than a month.

C. More than a year.   D. More than a month.

4. How did the black people fight for the civil rights?

A. By refusing to take buses.

B. By refusing to talk to the white.

C. Through fights with the white people.

D. By doing nothing.

5. What is the final result of the Civil Rights Movement?

A. The U. S. Supreme Court decided that Montgomery's bus laws were unfair and gave

     the African American community equal right.

B. They elected a man named Martin Luther King, Jr. to be the leader.

C. Black people and white people can take the same bus.

D. The movement eventually led to the Civil Rights Act in 1964, a set of laws that made

     discrimination a crime.

Windows98环境下，结束一个活动的应用程序窗口，可按快捷键()

A、Alt+F4

B、Ctrl+F4

C、Alt+Esc

D、Ctrl+Esc

按UCP500规定汇票的受票人应填写（）。

A.出口方

B.进口方

C.付款银行

D.议付银行