Question: Q: Read the following article and select the best answer. Article: Between 1996 and 2010, according to a study published in 2012, the use of computed tomography (CT)  scans nearly increased by three times as much, from 52 scans per 1,000 patients to 149 scans per 1,000 patients. And those images certainly provided valuable information to help doctors diagnose  hidden conditions that wouldn't have been possible without the added insight. But CT scans produce those detailed images using small amounts of radiation, and while the   risk of that exposure is small, on a population level, increased reliance on the scans could drive a slight bump in cancer risk from CT. That's exactly what the latest study, published in the British Medical Journal, found. It's the largest study to date -- involving 10.9 million Australians born between 1985 and 2005. A team of researchers from Australia and Europe studied the cancer rates of Australian patients from birth to 19 years old who had CT scans in early childhood, and compared them to those who did not receive the scans. Most of the cases were followed for 10 to 17 years, and by the end of the study period, 3,150 of the 680,000 patients exposed to CT scans during childhood and young adulthood developed cancer and 57,542 of the remaining participants, who were not exposed, developed cancer. Those who were scanned had a 24% greater risk of cancer than those who did not receive them, with the risk increasing by 16% for each additional CT. The risk was highest for children who received scans before age five; they showed a 35% increased chance of developing a cancer during the study period than those who weren't scanned at this age. That research is still ongoing, however, and in the meantime, doctors and patients are left to find the delicate balance between how necessary scans are to diagnose disease, and their potential risk of causing cancer, which, most experts say, is still very small. "All parties, including patients and families, need to work together to make sure that CT scans are limited to situations where there is a definite ... Question: Among the following, who will face the highest cancer risk after CT scans? - A one-year-old baby. - A seven-year-old student. - A fourteen-year-old teen. - A twenty-year-old adult.
A: A one-year-old baby.


Q: Read the following article and select the best answer. Article: _ (from How Do Animals Move?) Many animals scurry up tree trunks to escape enemies or find food. Some live in the treetops. Many of these animals are not only expert climbers, but they also have found interesting ways to get from tree to tree.    How Do Animals Adapt?andHow Do Animals Move? are comprehensive explorations of animal adaptations and movement for young readers. Both are part of a 21 book series,The Science of Living Things.    InHow Do Animals Adapt?readers learn how animals adapt to survive with respect not only to climate, darkness, food and defenses but also to offspring and people. These adaptations are well explained in double page spreads   with examples clearly depicted   in photographs and diagrams and developed through their accompanying captions  .    As the title suggests, movement is the focus ofHow Do Animals Move?Beginning with a description of the explanation of movement, the reader is exposed to the many different ways of animals movement in the air, on land, under ground and in the water. Several unconventional   variations (e.g. looping of inchworms, the rectilinear motion of snakes) are included. Once again, the photographs and diagrams plainly support the double page spread discussions of animal movement.    The language of both titles is simple enough for young readers without talking down to them. In both books, terminology   is featured in  . Some of these words are explained in the basic glossary while the majority are explained clearly in the text. Many of these terms provide readers with some fascinating, uncommon words (e.g. brachiation, potassium, skein, and estimate). As do many of Kalman's book, both of these titles have a table of contents, glossary and index   which are all enough to introduce young readers to the nature of these tools.    Both titles would make excellent additions to any science collection for young readers. Question: The passage is a/an  _  . - report - review - advertisement - journal
A: review


Q: Read the following article and select the best answer. Article: Look carefully and you'll find musicians at the top of almost any industry. The television broadcaster Paula Zahn(cello) and the NBC chief White House correspondent Chuck Todd (French horn) attended college on music scholarships; Both Microsoft's Mr. Allen and the venture capitalist Rogar McNamee have rock bands. Lorry Page, a co-founder of Google, played saxophone in high school. The former World Bank president James D. Wolfensohn has played cello at Carnegie Hall. The connection isn't a coincidence. I know because I asked. I put the question to top-flight professionals in industries from tech to finance to media, all of whom had serious ( if often little-known) past lives as musicians. Almost all made a connection between their music training and their professional achievements. Will your school music program turn your kid into a Paul Allen, the billionaire co-founder of Microsoft (guitar)? Or a Woody Allen (clarinet )? Probably not. These are outstanding achievers. But the way these and other visionaries   I spoke to process music is interesting. But the key question is: why does that connection exist? Paul Allen offers an answer. He says music "establish your confidence in the ability to create." He began playing the violin at age 7 and switched to the guitar as a teenager. Even in the early days of Microsoft, he would pick up his guitar at the end of marathon days of programming. The music was the emotional analog   to his day job, both of them show his different creativity. He says, "something is pushing you to look beyond what currently exists and express yourself in a new way." For many of the high achievers I spoke with, music functions as a "hidden language," as Mr. Wolfensohn calls it, one that enhances the ability to connect different or even opposite ideas. When he ran the World Band, Mr. Wolfensohn traveled to more than 100 countries, often taking in local performances (and occasionally joining in on a borrowed cello), which helped him understand "the culture of people". Consider the qualities... Question: The author develops the passage mainly   _  . - by classification - by comparison - by example - by process

Answer: A: by example