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A．Nearly fifty percent are foreigners.B．About fifteen percent are from Africa.C．A larg

A. Nearly fifty percent are foreigners.
B. About fifteen percent are from Africa.
C. A large majority are from Latin America.
D. A small number are from the Far East.

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听力原文： In the United States, boys and girls start school when they are five years old. In some states they must stay in school until they are sixteen. Most students are seventeen or eighteen years old when they graduate from secondary school.
Most children go to public elementary and secondary schools! The parents of public school pupils do not have to pay directly for their children's education because tax money supports the public schools. If a child attends a private school, his parents pay the school for the child's education.
Today about half of the high school graduates go on to colleges and universities. Some colleges and universities receive tax money from the government. A student at a state university does not have to pay very much if his parents live in that state, private colleges and universities are expensive, however. Almost half of the college students in the United States work while they are studying. When a student's family is not rich, he has to earn money far part of his college expenses.
(30)

At 5 years old.
B. At 6 years old.
C. At 7 years old.
D. It's not clear.

According to this passage, patents' spying on their children is a controversial problem.

A. Y
B. N
C. NG

听力原文： The first postal service in North America began in New England in the 17th century. All mail arriving in Massachusetts colony was sent to the home of appointed official in Boston. In turn, he would deliver the mail from Boston on horseback to its destination, receiving one penny for each good article of mail. Later in the century postal services were established between Philadelphia and Delaware. In 1691, the British crown appointed the first postmaster general to have charge of the mail for all the colonies in North America. Later, Benjamin Franklin served as the postmaster general for the British government and then was made postmaster by the newly formed United States government. Franklin was responsible for establishing the United States' postal systems on a permanent basis. He increased the number of post office, introduced the use of stagecoaches to carry mail, and started a package service system. They were used to carry mail into the towns. Some communities, especially those out west, were far from the services of transportation. To serve them, the post office developed a system called "star routes". Private contractors paid to deliver mall to the communities from railways by horse and wagon. The postal service, which was started over 3 centuries ago, has developed into an extensive government service with post offices in every city, town, and village in the United States.
(33)

A. The history of Benjamin Franklin.
B. The history of the U.S. mail.
C. The Changes of writing letters.
D. The history of U.S.

A．Avoid the party.B．Attend the party.C．Go home.D．Repeat himself.

Avoid the party.
B. Attend the party.
C. Go home.
D. Repeat himself.