The question this week comes from our listener Herve Acard, who asks about the American word “OK”, which means “all right” or “acceptable”. It expresses agreement or approval. The word is used more often than any other word in the world.
Language expert Allen Walker Read said the word began as a short way of writing a different spelling of the words “all correct”. Old stories say some foreign-born people would write “all correct” as o-l-l k-o-r-r-e-c-t and spoke it as “OK”. Some people say it came from the Native American Indian tribe known as the Choctaws. The Choctaw word “okeh” means the same as the American word “OK”. Experts say early explorers in the Western America spoke the Choctaw language in the nineteenth century. The language spread across the country.
According to some people, “OK” was a way to shorten Greek words that mean everything is fine. It is also said that a railroad worker named Obadiah Kelly invented the word. He is said to have put the first letters of his names — O and K — on each object people gave him to place on the train.
Another explanation is that “OK” was invented by a political organization that supported Martin Van Buren for president in the 1800s. They called their organization the OK Club. The letters O and K were taken from the name of the town where Martin Van Buren was born — Old Kinderhook, New York.
Not everyone agrees with these explanations, but experts do agree that the word is purely American and has spread to almost every country on Earth. Yet in the United States, it is used mostly in speech. Serious writers prefer using words, such as “agree”, “approve” or “confirm” instead.
小题1:Where does the passage probably come from?
A．A newspaper.
B．A textbook.
C．A radio program.
D．A language magazine.小题2:Of the following origins, which one has the same meaning as the American word “OK”?
A．The OK Club
B．The Choctaw word “okeh”
C．The word invented by Martin Van Buren
D．The short form of “all correct”小题3:According to the passage, which statement is NOT true?
A. People disagree about the origin of “OK”.
B. “OK” is often used in formal writing in the USA.
C. The word “OK” is widely used all over the world.
D. Native American language once influenced American English.
求出波速．根据“上下坡”法判断出波的传播方向．
．x=1.0m处的质元在t=0、t=6s时刻在平衡位置，AB错误；t=3s时刻在正的最大位移处，C错误，t=5s时刻，由振动图像可以判断，x=1.0m处的质元向平衡位置运动，由此可以判断波向x正方向传播，故D正确。