UseyourAmericanExpressCardtoen-优题课

That little “a” with a circle curling around it that is found in E – mail addresses is most commonly referred to as the “at” symbol.
Surprisingly though, there is no official, universal name for this sign. There are dozens of strange terms to describe the "@" symbol.
Before it became the standard symbol for electronic mail, the "@" symbol was used to represent the cost of something or how heavy something is. For instance, if you purchased 6 apples, you might write it as 6 apples "@" $1.10 each.
With the introduction of e-mail came the popularity of the "@" symbol. The "@" symbol or the "at sign" separates a person's online user name from his mail server(服务器) address. For instance, joe@uselessknowledge.com. Its widespread use on the Internet made it necessary to put this symbol on keyboards in other countries that have never seen or used the symbol before. As a result, there is really no official name for this symbol.
The actual origin of the symbol remains a mystery. History tells us that the @ symbol came from the tired hands of the Middle Ages. During the Middle Ages before the invention of printing machines, every letter of a word had to be copied with great efforts by hand for each copy of a published book. The monks that performed these long, boring copying duties looked for ways to reduce the number of individual strokes (笔画) per word for common words. Although the word “at” is quite short to begin with, it was a common enough word in text and documents so that those monks thought it would be quicker and easier to shorten the word “at” even more. As a result, the monks changed the shape of “t” into a circle to surround “a”, thus leaving out two strokes in the spelling “t”.
45．Which of the following is the best title of the passage?
A．How “at” developed into @. B．How @ came into being.
C．How monks invented @. D．How people wrote the cost of something.
46．Who knows the origin of @?
A．Nobody B．Monks C．Apple buyers D．Internet users
47．Which is NOT the reason for the monks to spell “at” as @?
A．Though “at” is short, it was used very often.
B．The monks wanted to be quicker and easier with their copying.
C．The monks wanted to invent a new word.
D．Copying work was long and boring for them.
48．According to the paragraph , which is TRUE about the symbol of @ today?
A．When you are online, you must use the @ symbol.
B．Kittly 163.com@is an email address.
C．In countries where @ is used, governments have given it an official name.
D．It is likely to find the @ symbol on computer keyboards worldwide.

Wind is the great maker of waves. There are exceptions, such as the tidal waves, sometimes produces by earthquakes under the sea. But the waves most of us know are produced by winds blowing over the sea.Now before constructing an imaginary life history of a typical wave, we need to know certain physical things about it. A wave has height, from trough (low point)to crest (high point),and it has length—the distance from this crest to that of the following wave. The period of the wave means the time it takes for succeeding crests to pass a fixed point. None of these things stays the same— for all depend upon the depth of the water and many other matters.
The water that makes up a wave does not advance with it across the sea. Each drop of water turns around in a little circle with the passing of the wave, but returns very nearly to its original position. And it is fortunate that this is so, for if the huge masses of water that make up a wave actually moved across the sea, sailing would be impossible.
If we want to find the speed of a wave, we may use the following way:
Speeding="Wavelength×Frequency"
Here, wavelength is the distance between two high points (crests), frequency means the number of cycles per second.
41.What causes waves according to the passage?
Earthquakes and nothing else. B. Wind and volcanos.
C. Wind and earthquakes. D. Wind and water.
42.Which of the following is true according to the text?
A. The water of a wave moves away across the sea.
B. The water of a wave remains almost in the same place.
C. The water of a wave goes with the passing of the wave.
D. The length of a wave means the distance between crest and trough.
43.The underlined word “succeeding” means__________.
A. reaching an aim B. doing well C. following after D. taking place
44.If the speed of wave 1 is 100 cm/s, and its frequency 10;and the frequency of wave 2 is 300,while its speed is twice that of wave 1.Which of the following is true?
A. The wave-lengths of the two are equal.
B. The wave-length of wave 1 is 10 times longer than that of Wave 2.
C. The wave-length of wave 2 is longer than that of wave 1.
D. The wave-length of wave 1 is longer than that of wave 2.

Guangzhou （Xinhua）——12 people were killed and 20 injured early yesterday morning when they jumped from a burning train car into the path of an oncoming goods train in Southern China. When No. 247 Wuchang——Guangzhou passenger train was passing the Dayaoshan Tunnel in Guangdong Province， South China at 00 ：17 yesterday， a fire caused by passengers' smoking broke out on No. 17 car. They wanted to extinguish fire. As the train stopped some frightened passengers jumped from windows. 12 people were crushed to death and 20 others injured by a northward passing goods train（No. 1766）。
1. In which direction did the passenger train travel？
A. Northward. B. Southward. C. Eastward. D. Westward.
2. When did the accident happen？
A. At 00：17 am. B. At 00：17 pm.
C. At seventeen past one. D. At seventeen to one.
3. Where did the accident happen？
A. In Wuchang. B. In Guangzhou.
C. In Hubei. D. In Guangdong.
4. What was the cause of the fire？
A. A heavy rain. B. High temperature. C. Carelessness. D. Fear.

More and more often we heard of people talking about Karaoke（卡拉OK）。 But what on earth it is about， still remains a question for many people. Karaoke is a sort of acoustic equipment which was invented in Japan around the middle of the 1970's. It means "a band without people" in Japanese. In fact， it is just a music tape without words. This equipment first appeared in some public houses and snack bars， and mainly for the customers to enjoy themselves. Most of the music in Karaoke was popular music. Therefore， at times， when anyone felt like it， he might sing songs to the accompaniment of the music that came from the equipment. Shortly after its invention， Karaoke was spread to the whole world. It was introduced to China and was welcomed by many people. Although you are not a good singer， or even sometimes you may sing out of tune， you can always enjoy yourself by singing Karaoke.
1. In this passage "band" means "group of persons ________."
A. who play games on the sports ground
B. who play music together
C. living in the same neighborhood
D. doing things together under a leader and with a common purpose
2. Karaoke is just a ______.
A. cassette tape with only music
B. cassette tape recorder
C. band from Japan
D. voice recording equipment
3. Karaoke was spread to the whole world ________.
A. as soon as it was invented
B. long before
C. not long after it was invented
D. before long
4. The main idea of this passage is ______.
A. all persons like to play Karaoke
B. to introduce Karaoke to the people
C. Karaoke is a wonderful equipment
D. Karaoke is used everywhere including snack bars

Mrs. Blake teaches English in a large school in the inner area of a big city on the west of coast. Even since she was a young girl,she has wanted to become a teacher. She has taught eight years now and hasn‘t changed her mind. After she graduated from high school， she went on to college. Four years later， she received her bachelor’s degree （B A） in English and her teaching certificate（证书）。 Then she went to teach in the secondary schools of her state. In the summers， Mrs. Blake takes more classes； she hopes to get a master‘s degree （M A）。 With an MA， she will receive a higher salary and if possible， she hopes to get a doctor’s degree as well. The school day at Mrs. Blake‘s high school， like that in many high schools in the United States， is divided into one hour each. Mrs. Blake must teach five of these periods. During her free period， which for her is from 2 to 3 P.M. ， Mrs. Blake must meet with parents， make out examinations， check assignments at all， Mrs. Blake works continuously from the time she arrives at school in the morning till the time she leaves for home late in the afternoon.
1. How long is it since Mrs. Blake graduated from middle school？
A. four years B. eight years C. twelve years d. twenty years
2. According to the article， which is the right order of the degrees a person can receive after going to university？
A. a doctor‘s degree – a bachelor’s degree – a master‘s degree
B. a bachelor’s degree – a master‘s degree – a doctor’s degree
C. a master‘s degree—a bachelor’s degree – a doctor‘s degree
D. a bachelor’s degree – a doctor‘s degree—a master’s degree
3. How many degrees has Mrs. Blake achieved so far？
A. one B. two C. three D. none
4. Which of the following sentences is not true？
A. Mrs. Blake teaches in the inner area of big city on the east of the United Sates
B. Mrs. Blake has turned her wish of becoming a teacher into reality.
C. Mrs. Blake is still studying in her holidays in order to get higher degrees.
D. The working hours in the school where Mrs. Blake works are similar to those of many other high schools in the states.