People with an emotionally anxious personality appear to be the likeliest recipients of dog bites (and the least likely people to report them), researchers said. To obtain a more accurate snapshot of dog-bite damage, Westgarth and her colleagues【C1】________nearly 700 people in 385 households in the small town of Cheshire about their dog-bite experience. Right away, the researchers found that the rate of dog-bite【C2】________reported by Cheshire residents greatly exceeded the national average【C3】________by official hospital records. When the team started looking at the common【C4】________behind the respondents' reported dog bites, things got a little more interesting. For one, men were【C5】________twice as likely as women to have been bitten in their lifetimes. Most surprising, though, was a(n)【C6】________link between dog bites and respondents who【C7】________lowest for emotional stability on the personality test. The more emotionally unstable a person was, the more likely they were to have been bitten by a dog. "Our findings suggest that the less anxious, irritable and【C8】________a person is, the less likely they are to have been bitten," Westgarth said. As conducted, the study cannot【C9】________whether a person's low emotional stability directly results in a higher【C10】________of being bitten, or whether being bitten results in lower emotional stability. Further research is required, Westgarth said. A) depressed B) incidents C) depression D) indicated E) obscure F) likelihood G) affect H) nearly I) confirm J) factors K) abruptly L) apparent M) venture N) scored O) surveyed

The Amazon rainforest is as pristine a place as most people can imagine, but even there, the effects of a changing climate are playing out. Now, research suggests that many of the region's most sensitive bird species are starting to evolve in【C1】________ to warming. Previous research found that some birds in the undisturbed Amazon—the world's largest rainforest—are【C2】declines that may be related to climate change. The new study examined four decades of data on bird species and found that as the Amazon's dry season has gotten hotter and more arid, some species appear to be changing【C3】 . Birds are often considered sentinel (哨兵) species—meaning that they【C4】________the overall health of an ecosystem—so scientists are particularly【C5】________in how they're responding to climate change. In general, the news has not been good. For instance, a 2019 report by the National Audubon Society found that more than two-thirds of North America's bird species will be【C6】________to extinction by 2100 if warming trends continue on their current course. During the study period, the【C7】________temperature in the region rose, while precipitation declined. Temperatures increased by 1C during the wet season and 1.65 C in the dry season. Precipitation increased by 13 percent during the rainy season but decreased by 15 percent in the dry season,【C8】________for a hotter, dryer climate overall. These climatic changes overlapped with changes in the birds' builds, the researchers say, with the dryer climate going further to explain the changes. Because of the study's "long time series and large【C9】sizes, the authors were able to show the morphological (形态学的 ) effects of climate change on resident【C10】 birds," said an expert. A) average B) academic C) experiencing D) indicate E) interested F) making G) physically H) protection I) response J) reflects K) sample L) tropical M) tradition N) vulnerable O) virtually

Exercise can provide a way to maintain brain function, according to a study in the Trends in Neuroscience journal. The research shows that your session on the track or the treadmill increases the molecules (分子) in your brain that aid learning and protect against【C1】________decline. Psychologist Dr. Delice Coffey【C2】________that "Exercise helps new brain cells to grow. It aids in brain plasticity by【C3】________the development of new connections between the cells and cortical areas of the brain." The rise in these molecules,【C4】as a brain-derived neurotrophic factor (BDNF), occurs in the hippocampus, which is the center for memory formation and learning. BDNF is a super-charged protein that helps keep brain circuitry【C5】. Those who have low levels of BDNF may【C6】from Alzheimer's, dementia, or depression. Exercise also helps keep your brain supplied with【C7】. "Exercise helps get oxygen to the brain, which is【C8】________to our survival. By increasing the heart rate through exercise, it pumps the vital oxygen the brain needs," said Dr. Coffey. When you swap the couch for a 5km run, you also make this process more efficient. "Exercise helps the heart to beat faster by pumping more blood with each beat. When your heart beats fast during exercise, it gets more blood through the body," said Dr. Coffey. A healthy cardio output keeps your blood【C9】at the levels needed to get oxygen-rich blood to your brain and other vital organs. If you want to increase your gray matter, you need to be prepared to break a sweat. Dr. Coffey said that exercises most beneficial to the brain are aerobic-style workouts. "Studies show that swimming and running seem to be best for brain health," said Coffey. "【C10】 , weightlifting can also increase the heart rate, which can also be beneficial to brain health." A) adds B) adequate C) cognitive D) collaborate E) essential F) fuel G) However H) Henceforth I) intact J) intelligible K) known L) stimulating M) suffer N) pressure O) parallel