Scientists are debating how to limit their newly-discovered power to change genetic structure. Scientists already modify the genes of farm animals and agricultural plants to make them more productive or stronger. But now they can also change genes in wild animals and plants. These genes would continue into later generations. For example, it may be possible for scientists to remove from existence the kind of mosquitoes that carry the Zika virus. They might also be able to permanently remove species of plants and animals that are destructive to other species. In a report published last week, the U. S. National Academies of Sciences, Engineering and Medicine (NAS) said it supports continued research on this kind of gene control. But it warned that it is not possible to know what will happen when these changed plants and animals are released into the wild. Sixteen biologists, ethicists and policymakers are on an NAS committee that is examining the issue. They say that there is value to the new technology. But, they say, there is not enough evidence to support the release of modified organisms from the laboratory into nature. Many people would support stopping mosquitoes and rats from carrying diseases. But scientists say we must understand the possible scientific, ethical, legal and social results of such action before we decide whether to take it. Gene modification is spread through reproduction . Changed genes will continue to spread as long as an animal or plant continues to reproduce. They cannot be limited to a farm or kept within a country's borders. Scientists are wondering what may happen if a modified organism mates with another species. They are not yet sure how the modified genes would affect the other species. It is possible that those genes could harm those creatures or even lead to their disappearance from our planet. What can be the best title for the passage? A) Stop research on gene control B) How to change genetic structure C) Power and danger of gene control D) Advantages of gene control in wild animals and plants
C
(Question)
Everyone gets sick of hearing. "Put on your seat belt!"But it's good advice. People who wear seat belts are 45 percent less likely to be killed while riding in the front seat of a car. The US government wants more seat belt laws. It says children aged 4 to 15 are often killed in car accidents. In 2005, there were 1,627 children aged 4 to 15 killed in car accidents. More than 1,000 of those children were not wearing seat belts. If they had been wearing seat belts, 500 of those children could be alive today. These children are too old to be in car seats, but they often sit in the back seat. Seat belt laws in many states, including Wisconsin, only require people in the front seat to wear seat belts. Children who aren't wearing seat belts can be thrown from the car. The risk of dying in an accident is three times greater if the person is thrown from the car. New laws could require children aged 4 to 8 to be in booster seats in the car. Booster seats help seat belts fit children properly. Right now, only 5 percent of children aged 4 to 8 are seated in booster seats. While parents have the choice of whether wearing seat belts or not, children are too young to make that choice. Even if you decide not to wear a seat belt, make sure you children are in seat belts and car seats. It's the law and it will save their lives. What would be the best title of this passage? A) Children Should Put on Seat Belts. B) Too Many Traffic Accidents Happened Recently. C) Traffic Laws Are Very Important. D) Parents Are Important to Children.
(Answer)
A
Ques: A disastrous competition is going on in England, with billions of dollars and hundreds of lives in danger. OK, that's not true. But competitors from around the world gathered on Thursday to compete for the title of 2012's World's Biggest Liar. Each participant is given up to five minutes to make up the best lie in the competition, which was started in honor of 19th-century Bridge Inn owner Will Ritson, who was reportedly famous for his lies. Competitors gather at the Bridge Inn every year for the competition, a small pub in northwestern England. Anyone can take part in the competition. Well, almost anyway; the reporters note that lawyers and politicians are banned, who is said to enjoy "an unfair advantage" in the proceedings . A study published this past July in the journal Evolution & Human Behavior found that nearly all lies are detectable through visible facial muscle reactions in the person telling a lie. "Thus, while interpersonal deception often is highly successful, signs of hidden emotional states are communicated clearly to the informed observer," the study concluded. A churchman of Carlisle reportedly holds what may be the greatest lie of all time in the competition, simply stating, "I have never told a lie in my life." In 2003, Abrie Krueger of South Africa became the first non-Brit to win the competition. Ironically, Krueger was accused by some of cheating. In 2006, comedian Sue Perkins became the first female to win the competition, telling a tale about people riding camels to work as a result of climate change. Last year's winning entry came from Glen Boyland, who told a lie about competing in a snail-racing competition with Prince Charles. The article begins with _ . A) a piece of news B) a lie told by the writer C) the passage's topic sentence D) a case from the competition
Ans: B
Question: Rob Kalin learned the secret to success while he was still in his baby bed. At age one, the Boston-bom teacher's son dragged around a stuffed rabbit that had been lovingly sewn by one of his mother's students. True, one of the ears was sewn on backward, but that just added to its magic. "It was always special to me," Kalin remembers of his first handmade craft . Kalin's appreciation for the simple and the simply eccentric inspired him to create etsy. com, an online craft fair, probably the largest market for handmade goods in the world. Last year, 350,000 woodworkers and other craftsmen sold their one-of-a-kind crafts on the four-year-old site. They sell everything from hand-knit sleeves for Macbooks ($32) to myrtle-wood electric guitars ($3,200). And in an age of chain stores, it seems there's still a big market. More than three million consumers in 150 countries purchased about $87.5 million worth of crafts on Etsy last year. Emily Worden, founder of Elemental Threads, a custom handbag and jewelry company, signed up with Etsy when she started her company two years ago. She pays Etsy a 20-cent standard fee for each item she lists on the site, plus a 3.5 percent commission on everything sold. Etsy allows her to track the number of times customers click on a particular item to view it. "We can see that our necklaces are a popularly viewed item and which color1s and sizes get the most views," she says. "That is a guide to evolving our product lines." Today, Etsy's staff has ballooned to 70 employees, and the company reportedly earns more than $12 million a year. Kalin's father was a carpenter and taught him early on how to use his hands. Indeed, in high school, he put his skills to work -- developing the photos of his classmates and handcrafting a graduate ID to attend design classes. Eventually, he was admitted to New York University, studying classics and working as a carpenter. Kalin has also started sewing some of his own clothes. "I have to make something physical at least once a month," says... By looking at the click rate of her products, Emily Worden can _ . A) figure out how much she should pay Etsy B) know how many ladies like her items C) learn whether her company is well run D) predict what products will sell well
Answer:
D