I'm taking a test and have to guess the right answer to the question after the article. Article: Ever wonder why sometimes a hug is all you need ? You can't explain it , but there's just something comforting about being in your wife's arms after a rough day or giving mom a hug after a long time apart . A new study says the warm feeling in a hug is more than just skin deep . Researchers from the University of California , Berkeley believe that this loving feeling could have anti-aging benefits . Oxytocin , sometimes referred to as the " love hormone " or the " trust hormone , " is responsible for those indescribable feelings we get when we're bonding with a lover or a loved one . Levels of the hormone drop as we age , and evidence suggests that could be a contributing factor to the _ of our bodies as we age . Muscle loss in particular is one of the major side effects of aging , with our bodies losing up to 5 percent of our muscle mass each decade past our 30s . In the study , published in the journal Nature Communications , researchers injected oxytocin into older mice with muscle damage . The older mice had lower levels of the homeone than younger mice initially . But after nine days , the older mice who were given the hormone healed better than those who did not . In fact , their ability to repair muscle damage was up to 80 percent that of the younger mice . The results were not only fast-acting , but provide hope for future uses of the hormone in a variety of anti-aging capacities . " This is good because it demonstrates that extra oxytocin improves aged tissue stem cells without making muscle stem cells divide uncontrollably , " study co-author Wendy Cousins said in a statement . Previous uses of anti-aging molecules have also been associated with higher cancer risk , but researchers are hopeful that oxytocin can be useful in humans without this risk . In the future , researchers of Berkeley say oxytocin could be used to fight other age-related health issues by improving bone health and even being used as an alternative to hormone replacement therapy . Now go out and give someone a hug . Question: According to the passage , oxytocin _ . Options: A: decreases when people get older B: creates loving feeling on the skin C: leads to the great loss of muscles D: can be used in humans without any risk
A
(Question)
I'm taking a test and have to guess the right answer to the question after the article. Article: Have you ever walked to the shops, only to find when you get there that you've completely forgotten what you go for? Or have you struggled to remember the name of an old friend? For years, we've accepted that a forgetful brain is as much a part of aging as wrinkles and grey hair. But now a new book suggests we've got _ all wrong. According to The Secret Life Of The Grown-up Brain, by science writer, Barbara Strauch, our brains actually get better with age. In fact, she argues many new studies have found that the brain hits its peak between our 40s and 60s --much later than previously thought. Furthermore, not losing many brain cells as we age, we preserve them, and even produce new ones well into middle age. For years it's been accepted that the brain, much like the body, got worse with age. But the longest, largest study into what happens to people as they age suggests otherwise. This continuing research has followed 6,000 people since 1956, testing them every seven years. It has found that, on average, they performed better in cognitive tests in their late 40s and 50s than they had in their 20s. Specifically, older people did better in tests of vocabulary, spatial orientation skills, verbal memory (how many words you can remember) and problem solving. Where they were weaker was in numeracy (how quickly one can multiply, add, subtract and divide) and the speed at which they could move. However, with harder tasks, such as problem-solving and language, we are at our best at middle age and beyond. In short, researchers are going to come up with scientific evidence that we do get wiser with age. Question: What is NOT true of this new research? Options: A: It is the longest and largest of its kind. B: It has been running since 1956. C: The 6,000 people have been tested at least four times so far. D: Researchers have provided supporting scientific evidence
(Answer)
D
Question: I'm taking a test and have to guess the right answer to the question after the article. Article: In a world as fast-changing and full of information as our own, all of us need to know how to learn well. Yet evidence suggests that most of us don't use the learning techniques that science has proved the most effective. The scientific literature evaluating these techniques goes back to decades and across thousands of articles. It's far too _ and complex for the average parent, teacher or employer to look through. Fortunately, a team of five leading psychologists have done the job for us. Professor John Dunlosky and other psychologists closely examined 10 learning strategies and rated each from high to low utility on the basis of the evidence they've gathered. Here's part of their conclusions: In contrast to familiar practices, the effective learning strategies with the most evidence to support them aren't well known outside the lab. Take distributed practice, for example. This strategy involves spreading out your study time, rather than engaging in one marathon. Cramming information at the last minute may allow you to get through that test or meeting, but the material will quickly disappear from your memory. It's much more effective to look through the material at intervals over time. And the longer you want to remember the information, whether it's two weeks or two years, the longer the intervals should be. The second learning strategy that is highly recommended by Dunlosky is practice testing. Yes, more tests---but there not for a grade. Research shows that the mere act of calling information to mind strengthens that knowledge and aids in future retrieval . While practice testing is not a common strategy---despite the strong evidence supporting it ---there is one familiar approach that captures its benefits: using flash cards. And now flash cards can be presented in digital form. Both distributed practice and practice testing were rated as having "high utility" by Dunlosky. Question: About distributed practice and practice testing, it's true that _ . Options: A: many students have benefited a lot from them B: they were first put forward by John Dunlosky C: only a small number of experts know about them D: psychologists are studying whether they are effective
Answer:
C