20世纪()年代,世界玉米产区大面积种植的多为感病品种,致使该病流行成灾。

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问题:

20世纪()年代,世界玉米产区大面积种植的多为感病品种,致使该病流行成灾。

考点:农艺师考试玉米玉米题库
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It’s seven weeks into the new year. Do you know where your resolution is If you’re like millions of Americans, you probably vowed to lose weight, quit smoking and drink less in the new year. You kicked off January with a commitment to long-term well-being--until you came face-to-face with a cheeseburger. You spent a bundle on a shiny new gym pass. Turns out, it wasn’t reason enough for you to actually use the gym.

People can make poor decisions when it comes to health--despite their best intentions. It’s not easy abiding by wholesome choices (giving up French fries) when the consequences of not doing so (heart disease) seem so far in the future. Most people are bad at judging their health risks: smokers generally know cigarettes cause cancer, but they also tend to believe they’re less likely than other smokers to get it. And as any snack-loving dieter can attest, people can be comically inept at predicting their future .behavior. You swear you will eat just one potato chip but don’t stop until the bag is empty.

So, what does it take to motivate people to stick to the path set by their conscious brain How can good choices be made to seem more appealing than bad ones The problem stumps doctors, public-health officials and weight-loss experts, but one solution may spring from an unlikely source. Meet your new personal trainer: your boss.

American businesses have a particular interest in personal health, since worker illness costs them billions each year in insurance claims, sick days and high staff turnover. A 2008 survey of major US employers found that 64% consider their employees’ poor health decisions a serious barrier to affordable insurance coverage. Now some companies are tackling the motivation problem head on, using tactics drawn from behavioral psychology to nudge their employees to get healthy.

"It’s a bit paradoxical that employers need to provide incentives for people to improve their own health," says Michael Follick, a behavioral psychologist at Brown University and president of the consultancy Abacus Employer Health Solutions.

Paradoxical, maybe, but effective. Consider Amica Mutual Insurance, based in Rhode Island. Arnica seemed to be doing everything right: it boasts an on-site fitness center at its headquarters. It pays toward Weight Watchers and smoking-cessation help, gives gift cards to reward proper prenatal care and offers free flu shots each year. Still, in the mid-2000s, about 7% of the company’s insured population, including roughly 3 100 employees and their dependents, had diabetes. "We manage risk. That’s our core business," says Scott Boyd, Amica’s director of compensation and benefits. But diabetes-related claims from Arnica employees had doubled in four years. "We thought, OK," Boyd says now, "we have to manage these high-risk groups a little better.

Which of the following is TRUE according to the text()

A. If you want to keep healthy, you have to meet your personal trainer

B. The diabetes-related claims from Arnica employees have been increased

C. The American business doesn’t do anything concerned with personal health

D. Abiding by healthy choices is facile

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关于频率分布直方图中的有关数据,下列说法正确的是(  )

A.直方图的高表示该组上的个体在样本中的频率

B.直方图的高表示取某数的频率

C.直方图的高表示该组上某个体数与组距的比值

D.直方图的高表示该组上的个体在样本中的频率与组距的比值

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关于吸入用布地奈德混悬液的包装正确的是()。

A.玻璃瓶中

B.塑料瓶中

C.单一剂量聚乙烯瓶中

D.棕色玻璃瓶中

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下面对金刚烷胺的论述,哪些是错误的:

A.多巴胺受体激动剂

B.阻断中枢胆碱能受体,减弱黑质-纹状体通路中ACh的作用,因而能有效地治疗帕金森病

C.外周多巴胺脱羧酶抑制剂

D.促进DA能神经元释放DA,因而能治疗帕金森病

E.是多巴胺的前体物

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现实型文学的特征是()

A、再现性

B、逼真性

C、表现性

D、虚幻性

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