Scientists have devised a way to determine roughly where a person has lived using a strand ( ) of hair, a technique that could help track the movements of criminal suspects or unidentified murder victims. The method relies on measuring how chemical variations in drinking water show up in people's hair. "You're what you eat and drink, and that's recorded in your hair," said Thure Cerling, a geologist at the University of Utah. While U.S. diet is ly identical, water supplies vary. The differences result from weather patterns. The chemical composition of rainfall changes slightly as rain clouds move. Most hydrogen and oxygen atoms in water are stable, but traces of both elements are also present as heavier isotopes ( ). The heaviest rain falls first. As a result, storms that form over the Pacific deliver heavier water to California than to Utah. Similar patterns exist throughout the U.S. By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline. Each inch of hair corresponds to about two months. Cerling's team collected tap water samples from 600 cities and constructed a map of the regional difference. They checked the accuracy of the map by testing 200 hair samples collected from 65 barber shops. They were able to accurately place the hair samples in broad region roughly corresponding to the movement of rain systems. "It's not good for pinpointing ( )," Cerling said. "It's good for eliminating many possibilities." Todd Park, a local detective, said the method has helped him learn more about an unidentified woman whose skeleton was found near Great Salt Lake. The woman was 5 feet tall. Police recovered 26 bones, a T-shirt and several strands of hair. When Park heard about the research, he gave the hair samples to the researches. Chemical testing showed that over the two years before her death, she moved about every two months. She stayed in the Northwest, although the test could not be more specific than... What is said about the rainfall in America's West? A) There is much more rainfall in California than in Utah. B) The water it delivers becomes lighter when it moves inland. C) Its chemical composition is less stable than in other areas. D) It gathers more light isotopes as it moves eastward.
B
(Question)
When you want to find a job, you have to face the employer and you must know how to introduce yourself well. Then you will be lucky enough. The first impressions can play a major role in how an employer like you as a candidate . What you say during the first step of the interview may make a big difference. In fact, some hiring managers may make a decision to refuse a candidate based on what they didn't do when you met them. That's why it's important to pay attention to interview manners and to carefully think through how you will introduce yourself during a job interview. When arriving at the interview site you can introduce yourself to the receptionist by giving your name and telling the purpose of your visit. For example: "My name is Tim Jones and I have an interview scheduled with John Smith at 2 pm." You will be guided into the interview room or the hiring manager will come out to meet you in the reception area. Again, take the time to introduce yourself so the interviewer knows who you are. Offer to shake hands, even if the interviewer doesn't offer his hand first. Tell the interviewer that it is a pleasure to meet him. Smile, and be sure to make eye contact. Many hiring managers will start an interview with an open-ended question like "Tell me about yourself." Your response should focus on the key elements in your background. You should carefully analyze the job first to the interviewer, and you can point out the interests, skills, experiences, and personal qualities. Your introduction should be brief enough to hold the interest of the interviewer so that you can move on to the next question. Your goal is to connect personally with the interviewer as well as to show that you're qualified for the job. Of course, your comments should show your enthusiasm for the job and organization. However, don't overdo it and don't spend too much time talking about yourself. The passage is very useful for _ . A) anyone who will go to an interview B) a future receptionist C) a hiring manager D) anyone who wants to visit a company
(Answer)
A
Ques: Shanghai Xintiandi Style Mall is filled with a festive mood, featuring large-scale equipment, knit works and various activities, under the theme "kiss". "Kissing is seldom taken as the theme of artworks because in oriental culture, people restrain themselves from expressing their emotions," says Jiang Shan, who is in charge of the exhibition. "Through the exhibition, we hope to encourage people to be confident and brave in expressing their love." Inside the mall, which covers a large area from Zizhong Lu (Road) to Fuxingnan Lu (Road), dozens of color1ful decorations, including balloons, lollipops and lip-shaped decorations are hung on the walls and from the ceiling. Among the decorations, a bright-color1ed wool artwork attracts most eyeballs and brings about a feeling of warmth. The designer, Gu Yeli, says the art piece, Kiss Forest, was inspired by US artist Andy Warhol's 1963 experimental film Kiss, which featured various couples kissing for three and a half minutes each. Gu also organizes a small workshop to teach knitting to children. Artist Wang Xuejun sets up a stainless-steel mirror at the mall's gate leading to Zizhong Lu. Visitors, including men, are invited to put on lipstick and kiss the mirror, thus kissing themselves. The Beast Floral Shop, a flower shop in Shanghai, contributes two walls of flowers that are made into the shape of a book, named Kiss Book. Artifacts of bees and butterflies are fixed among the blossoms, kissing the flowers. The work represents love and harmony in nature. Architect Ma Ke creates a Kiss Bridge with transparent acrylic boards and ceramic fishbowls. Bridges are often spots for dating lovers in traditional Chinese folk stories and the goldfish in the bowls are witnesses of the lovers' kisses. In the south plaza, an18-meter-high interactive tree-shaped light equipment encourages people to kiss. Each kiss turns a certain light on, reminding audiences of their sweet childhood memories of kisses. At the side of the tree is a counter, in which each kiss is counted... What can we learn from the article? A) Most people are interested in Jiang Shan's art-piece, which brings about a feeling of warmth. B) Most visitors will kiss each other in front of the stainless steel mirror at the gate. C) All the decorations in the mall are aimed at encouraging lovers to express their love bravely. D) The 18-meter-high interactive tree-shaped light equipment will be on for each kiss.
Ans: D
When people hear a president speak, they seldom think about others helping to shape the presentation . Today, however, presidents depend on writers such as J. Terry Edmonds to help them communicate effectively. Edmonds is the first African American ever to work as a full-time speechwriter for a U. S. president; he is so the first African American to serve as director of speechwriting for White House. His is an all-American story of success. Edmonds grew up in Baltimore, Maryland; his father drove a truck, and his mother worked as a waitress. A. great reader, Edmonds showed a gift for writing at his high School, Baltimore City College After graduating in 1967 Edmonds went on to Morgan State University Edmonds began his career in business, with jobs in public relations and communications. He joined the world of politics as news secretary for his congressman from Baltimore During Bill Clinton's presidency, he wrote speeches for Health and Human Services Secretary Donna Shalala and worked in a number of job in the White House and in governmental departments President Clinton then appointed him to the office of directory of speechwriting Following the 2000 elections Edmonds returned to Morgan State University as the school's special assistant to the president for 2001-2002 The text is most likely to be found in a book about _ . A) popular science B) historical events C) successful people D) Political systems
C