【单选题】政府用于支持纯理论研究的投入经常被认为是浪费，似乎只有直接的技术应用可以证明科学的价值。但是，如果没有纯理论研究，应用技术终将成为日渐枯竭的无源之水。今天的纯理论研究可能看来没什么用，但是谁也说不准某一天它会产生什么样的应用奇迹。这正如人们完全可以问：“新生的婴儿有什么用？”上述议论基于以下哪项假设？
I理论发现和它的实际应用之间存在时间上的差距。
II纯理论研究比技术应用更费时间和金钱。
III理论转化为实际应用的时间越长，这种理论就越有价值。（）
A.仅仅I。
B.仅仅II。
C.仅仅III。
D.仅仅I和III。
E.I、II和III。
上述论证把“新生婴儿”比作以下哪项？（）
A.基于纯理论的一种新技术突破。
B.政府对科学研究的投入。
C.公众对纯理论研究的支持。
D.新技术成果使社会得到的受益。
E.一时看不到直接应用价值的纯理论发现。农场发言人：毗邻我农场的炼铅厂引起的空气污染造成了本农场农作物的大幅度减产。
I理论发现和它的实际应用之间存在时间上的差距。
II纯理论研究比技术应用更费时间和金钱。
III理论转化为实际应用的时间越长，这种理论就越有价值。（）
A.仅仅I。
B.仅仅II。
C.仅仅III。
D.仅仅I和III。
E.I、II和III。
上述论证把“新生婴儿”比作以下哪项？（）
A.基于纯理论的一种新技术突破。
B.政府对科学研究的投入。
C.公众对纯理论研究的支持。
D.新技术成果使社会得到的受益。
E.一时看不到直接应用价值的纯理论发现。农场发言人：毗邻我农场的炼铅厂引起的空气污染造成了本农场农作物的大幅度减产。
【单选题】The director often says it is difficult to design a program that will meet the ______ needs of all our users.
A．diverse
B．distinctive
C．distinct
D．distinguished
A．diverse
B．distinctive
C．distinct
D．distinguished
【单选题】You’ve probably heard the reports that moderate drinking can actually be good for your heart.But before you stock up (囤积) on beer, wine, or liquor for "medicinal purposes", read the fine print.
Guidelines published by theDepartment of Health and Human Services define moderate drinking as no more than a drink a day for most women and no more than two drinks a day for most men.But even moderate drinking may be ill-advised as you get older.
Research shows that as you age, you absorb alcohol more readily and are more sensitive to its effects. So the number of drinks you could tolerate years ago may be too much for you now. Why First, your body’s ratio of water to fat falls as you age, so there’s less water to dilute (稀释) the alcohol. Second, you have less blood flow to the liver and less efficient liver enzyme action, so your body doesn’t metabolize (新陈代谢) alcohol as readily.
Women need to be especially careful, since most can’t tolerate as much alcohol as men can. One reason is that they are generally smaller, and smaller people have less blood volume, so a little alcohol goes a longer way. Women also produce less of the enzyme that breaks down alcohol in the stomach before it is absorbed into the bloodstream.And they have a higher proportion of body fat, which does not absorb alcohol. The resultDrink for drink, women have 750//00 more alcohol in their bloodstream than men do.
Despite the caveats (警告, 告诫), there’s no doubt that, for many people, limited amounts of alcohol can help you live longer and decrease your risk of heart disease. Those who may be at risk for heart disease or stroke and those who are diabetic appear to benefit most from moderate alcohol intake (one or two drinks per day) over the course of their lifetimes.
For example, in a University of Wisconsin study of diabetic men and women with an average age of 69, the risk of death from coronary heart disease was significantly lower among moderate drinkers compared to abstainers (戒酒者). The death rate for those who had a drink a day was less than half of that for those who didn’t drink at all.
As you get older, ______.
A、you can tolerate more alcohol
B、you have less water in your body
C、your body metabolize alcohol more readily
D、your body becomes more sensitive to alcoholic effects
Guidelines published by theDepartment of Health and Human Services define moderate drinking as no more than a drink a day for most women and no more than two drinks a day for most men.But even moderate drinking may be ill-advised as you get older.
Research shows that as you age, you absorb alcohol more readily and are more sensitive to its effects. So the number of drinks you could tolerate years ago may be too much for you now. Why First, your body’s ratio of water to fat falls as you age, so there’s less water to dilute (稀释) the alcohol. Second, you have less blood flow to the liver and less efficient liver enzyme action, so your body doesn’t metabolize (新陈代谢) alcohol as readily.
Women need to be especially careful, since most can’t tolerate as much alcohol as men can. One reason is that they are generally smaller, and smaller people have less blood volume, so a little alcohol goes a longer way. Women also produce less of the enzyme that breaks down alcohol in the stomach before it is absorbed into the bloodstream.And they have a higher proportion of body fat, which does not absorb alcohol. The resultDrink for drink, women have 750//00 more alcohol in their bloodstream than men do.
Despite the caveats (警告, 告诫), there’s no doubt that, for many people, limited amounts of alcohol can help you live longer and decrease your risk of heart disease. Those who may be at risk for heart disease or stroke and those who are diabetic appear to benefit most from moderate alcohol intake (one or two drinks per day) over the course of their lifetimes.
For example, in a University of Wisconsin study of diabetic men and women with an average age of 69, the risk of death from coronary heart disease was significantly lower among moderate drinkers compared to abstainers (戒酒者). The death rate for those who had a drink a day was less than half of that for those who didn’t drink at all.
As you get older, ______.
A、you can tolerate more alcohol
B、you have less water in your body
C、your body metabolize alcohol more readily
D、your body becomes more sensitive to alcoholic effects
【单选题】A: I feel rather sick this morning. I don't think I can concentrate on the work. B: ______ A: I'm not sure, but I have got a bad headache.
A．How long have you been sick
B．How are you feeling now
C．Do you have a high temperature
D．I'm sorry to hear that and I can't help you now.
A．How long have you been sick
B．How are you feeling now
C．Do you have a high temperature
D．I'm sorry to hear that and I can't help you now.
【单选题】He often quoted "reason over passion" as maxim in ______ the long-standing division among Canada's English-speaking majority and the French-descended minority concentrated in his home province of Quebec.
A．adjusting
B．reconciling
C．conquering
D．consolidating
A．adjusting
B．reconciling
C．conquering
D．consolidating
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