According to the American College Health Association's most recent annual national survey, 30 percent of college students reported feeling "so depressed that it was difficult to function" at some time over the past year. Nearly three fourths of respondents in a 2011 National Alliance on Mental Il...
[完型填空] According to a new survey, students' safety has become a big problem. Many students are injured or killed in ___ kinds of accidents.Here is some advice for young students on how to ___ danger:If you are robbed(被抢劫), keep ___. If you cannot cry for help or run aw...
For instance, a small production line fire may not be significant enough on a community-wide scale to warrant expenditure of huge amounts of resources, and yet may be substantial to a small business a 注意,当这些分类也许是有用的在聚集体时,他们可能不附属对具体事件情景。 例如,小生产线火可能...
A.high-tech can completely solve the problem of pollution B.space technologies should be developed in a large scale C.we can move to the Mars after the earth has been destroyed D.we must protect the environment while developing economy. ...
BMI offers a sense of your total body fat, which is more revealing than the number on the scale. With higher amounts of body fat, a person's risk of certain diseases — such as heart disease, high blood pressure andtype 2 diabetes— increases, according toWinchester Hospital. ...
The UK Biobank is a large-scale prospective cohort study of approximately 500,000 volunteers enrolled from 2006 to 2010 in the UK. The detailed design and preliminary results have been published elsewhere [23]. In brief, the UK Biobank database includes individual demographic information, diagnostic...
aIn the formal survey, the author mainly adopted methods of convenience sampling and snowball sampling to distribute questionnaires. In order to serve the research purpose, the author organized the investigators to take out sample units according to factors of region, trade, scale and so on. Af ...
According to the American College Health Association’s most recent annual national survey, 30 percent of college students reported feepng "so depressed that it was difficult to function" at some time over the past year. Nearly three fourths of respondents in a 2011 National ...
To calculate the cost-efficacy of a recurrence-focused follow-up Trial design {8} The RADAR-PANC trial is an international randomized controlled trial nested within two large nationwide prospective cohorts (the Dutch Pancreatic Cancer Project; PACAP, and the UK Pancreas Cancer: Observations of Prac...
Another countervailing force is immigration. Immigrants generally don’t marry outside their racial or ethnic group. Their children do to some extent, but out-marriage really is most prevalent in the third generation. The most recent large-scale wave of immigration has produced only first-or secon...