One day, a slave owner entered a local store and threatened a young boy who was his slave. At first, the slave refused to move and ran for the door. The slave owner reached for a heavy weight. He threw it at his slave. Instead, it hit Harriet on the head. Harriet almost died. For the rest of her life, she carried the mark of a deep wound on her head. Miser Brodas felt he never needed Harriet. He decided to sell her. Harriet thought of a way to prevent this. Each time she was shown to someone who might buy her, she acted as if she were falling asleep. After a while, Mister Brodas gave up the hope of selling Harriet. He sent her back to the fields. At 24 she married a free black man, John Tubman. By then, Harriet was sure she should escape. In 1849, Mister Brodas died. His slaves probably would be sold to further South. John Tubman tried to make Harriet forget about running away. Harriet decided she must end her marriage and that she needed to tell her family that she was leaving. Harriet escaped for Pennsylvania where slavery was banned there. Once she hid under hay that had been cut from the fields. Another time, she wore men's clothing. Finally, she arrived in Pennsylvania. Now that Harriet was free, she didn't forget other slaves in Maryland. During the next ten years, she freed her parents and other family members. She traveled back and forth eighteen times, helping about 300 slaves escape. She became an expert at hiding from slave hunters. At one time, anyone finding Harriet was promised 40,000dollars for catching her--dead or alive. The people she helped called her Moses. She had rescued them from slavery just as the biblical Moses rescued the Jews. After the Civil War began, Harriet started to spy for the North. She also served as a nurse. After four years of bloody fighting, the North won the war. Abraham Lincoln freed the slaves in 1863. There was no longer any need for Harriet to be Moses. Harriet was hit by a heavy weight on her head when . A) she was helping a slave run away B) she was playing with a young boy C) she was staying at the local store D) she was running for the door of the store
C
(Question)
Monitoring global warming usually requires a Ph. D. and enough maths to glaze your eyes. But that Francisco Lopez and Ruby Nostrant track what climate change is doing to five different plants in Tucson, Arizona and they are only in the second grade. "We are collecting data because the weather is changing and the plants are blooming," Ruby explained. Scores of other students at Borton Primary Magnet School and Sunnyside High School in Tucson are heading outdoors to be part of a new scientific push to figure out how the biological timing of the earth is changing. It's a research project that the average person, even a kindergartner, can join in. The National Phenology Network is calling on volunteers to help track early spring blooms and eventually changes in animals caused by global warming. It's called Project Budburst. When it was first open to the public last year, thousands of people participated in 26 states. "All people can contribute to it by tracking the timing of flowering events or leaf-out events for plants and animals in their backyard," said Phenology Network director Jake Weltzin. He calls the volunteers "citizen-scientists." The idea is that tracking flowers blooming--especially lilacs ; which everyday people have helped track for decades--is fairly simple. The Website http://www.Windows.ucar.edu/ citizen _ science/budburst/index.html gives directions on what to look for in different parts of the country. University of Maryland professor David Inouye said it's so easy to figure out what's blooming that a lack of special knowledge isn't a problem. University of Arizona ecology graduate student Lisa Benton coordinated the Tucson high school students as they looked at plants five minutes from their high school. Each student has specific guidelines and she's been happy so far with the data she is getting. For his part, second-grader Francisco said he had fun helping out. "I like going out in the desert," he said. "I want to be an Einstein." We can conclude from the passage that _ . A) changes in animals caused by global warming happen earlier than those in plants B) the biological timing of earth is changing because of climate change C) the effect of climate change in Tucson, Arizona can be hardly noticed D) all the plants in Tucson, Arizona are blooming earlier because of climate change
(Answer)
B
Switzerland is famous for its watches. However, this country didn't invent the watch. It was the British who did it. Here is a story of how the watch was brought to Switzerland. Many years ago, an Englishman was traveling to Italy, on his way he stopped in a small town in south Switzerland. This Englishman traveled in a carriage inside which there was a carriage watch. This was the earliest kind of watch. A native shop assistant happened to see the watch. He wondered what it was and asked the Englishman about it, "it is a carriage watch," said the man. "This machine tells the time but now it isn't working." At once the shop assistant offered to try to repair it. So the traveler handed him the watch. The assistant was a very wise man. So it was not very surprising that he managed to repair it. He even remembered how it was made. As soon as the traveler had gone on his journey, he made a watch exactly the same type. Thus the watch-making was started in Switzerland. Today Swiss watches are sold in stores all over the world. The first Swiss watch was made by _ . A) an Italian shop assistant. B) an English shop assistant. C) a shop assistant in Switzerland. D) a man who was traveling to Italy.
C