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In a competitive economy, the consumer usually has the choice of several different brands of the same product. Yet underneath their labels, the products are often nearly (36) . One manufacturer’s toothpaste tends to differ very little from another manufacture’s. Thus, manufacturers are (37) with a problem-how to keep sales high enough to stay in business. Manufacturers solve this problem by (38) They try to (39) consumers in various ways. In fact, advertisements may be (40) into two types according to the kind of appeals they use.
One type of advertisement tries to appeal to the consumer’s reasoning mind. It may offer a (41) that seems scientific. For example it may say that the dentists (42) flash toothpaste. In selling a product, the truth of the advertising may be less important than the appearance of truth. A scientific (43) gives the appearance of truth.
Another type of advertisement tries to amuse the potential buyer. (44) .
One way of doing this is to make the products appear alive. For example, (45) . Ads of this sort are silly, but they also tend to be amusing. (46) .
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【多选题】下列有关一级动力学消除的叙述中，正确的是
A.
药物的消除速率与体内药量无关
B.
药物的消除速率与体内药量成正比关系
C.
药物的消除半衰期与体内药量无关
D.
药物的消除半衰期与体内药量有关
E.
大多数药物在体内的转运和消除符合一级动力学过程
【单选题】In his report, Stern overstates（） A. the remedies for a possible economic slowdown B. the necessity for a sustainable economic growth C. the costs of minimizing the effects of global warming D. the da...
A.
It seems impossible to have an honest conversation about global warming. I say this after diligently perusing the British government’s huge report released last week by Sir Nicholas Stern, former chief economist of the World Bank and now a high civil servant. The report is a masterpiece of misleading public relations. It foresees dire consequences if global warming isn’t curbed: a worldwide depression and flooding of many coastal cities. Meanwhile, the costs of minimizing these awful outcomes are small: only 1 percent of world economic output in 2050.
B.
No sane person could fail to conclude that we should conquer global warming instantly, if not sooner. Who could disagree Well, me. Stem’s headlined conclusions are intellectual fictions. They’re essentially fabrications to justify an aggressive anti-global-warming agenda. The danger of that is that we’d end up with the worst of both worlds: a program that harms the economy without much cutting of greenhouse gases.
C.
Let me throw some messy realities onto Stern’s tidy picture. In the global-warming debate, there’s a big gap between public rhetoric and public behavior. Greenhouse emissions continue to rise despite many earnest pledges to control them. Just last week, the United Nations reported that of the 41 countries it monitors (not including most developing nations), 34 had increased greenhouse emissions from 2000 to 2004. These include most countries committed to reducing emissions under the Kyoto Protocol.
D.
Why is this In rich democracies, policies that might curb greenhouse gases require politicians and the public to act in exceptionally "enlightened" ways. They have to accept "pain" now for benefits that won’t materialize for decades, probably after they’re dead. And even if rich countries cut emissions, it won’t make much difference unless poor countries do likewise and so far, they’ve refused because that might jeopardize their economic growth and poverty-reduction efforts.
E.
The notion that there’s only a modest tension between suppressing greenhouse gases and sustaining economic growth is highly dubious. Stern arrives at his trivial costs—that 1 percent of world GDP in 2050—by essentially assuming them. His estimates presume that, with proper policies, technological improvements will automatically reconcile declining emissions with adequate economic growth. This is a heroic leap. To check warming, Stern wants annual emissions 25 percent below current levels by 2050. The IEA projects that economic growth by 2050 would more than double emissions. At present, we can’t bridge that gap.
F.
The other great distortion in Stern’s report involves global warming’s effects. No one knows what these might be, because we don’t know how much warming might occur, when, where, or how easily people might adapt. Stern’s horrific specter distills many of the most terrifying guesses, including some imagined for the 22nd century, and implies they’re imminent. The idea is to scare people while reassuring them that policies to avert calamity, if started now, would be fairly easy and inexpensive.
【单选题】（299）是（） A.相同 B.部分重叠 C.连续 D.不重叠且不连续
A.
对一路信号的载波频率为f0，进行FSK调制后的信号频率分别为f1和f2(f1＜f2)，则三者的关系是 (298) 。当对多路信号进行调制时，调制后各信号的频谱 (299) 。信号到达接收端后通过 (300) 分离各路信号。WDM与FDM工作方式相似，但WDM调制的是 (301) 。ILD是 (302) 使用的设备。
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【多选题】下列有关一级动力学消除的叙述中，正确的是
A.
药物的消除速率与体内药量无关
B.
药物的消除速率与体内药量成正比关系
C.
药物的消除半衰期与体内药量无关
D.
药物的消除半衰期与体内药量有关
E.
大多数药物在体内的转运和消除符合一级动力学过程
【单选题】In his report, Stern overstates（） A. the remedies for a possible economic slowdown B. the necessity for a sustainable economic growth C. the costs of minimizing the effects of global warming D. the da...
A.
It seems impossible to have an honest conversation about global warming. I say this after diligently perusing the British government’s huge report released last week by Sir Nicholas Stern, former chief economist of the World Bank and now a high civil servant. The report is a masterpiece of misleading public relations. It foresees dire consequences if global warming isn’t curbed: a worldwide depression and flooding of many coastal cities. Meanwhile, the costs of minimizing these awful outcomes are small: only 1 percent of world economic output in 2050.
B.
No sane person could fail to conclude that we should conquer global warming instantly, if not sooner. Who could disagree Well, me. Stem’s headlined conclusions are intellectual fictions. They’re essentially fabrications to justify an aggressive anti-global-warming agenda. The danger of that is that we’d end up with the worst of both worlds: a program that harms the economy without much cutting of greenhouse gases.
C.
Let me throw some messy realities onto Stern’s tidy picture. In the global-warming debate, there’s a big gap between public rhetoric and public behavior. Greenhouse emissions continue to rise despite many earnest pledges to control them. Just last week, the United Nations reported that of the 41 countries it monitors (not including most developing nations), 34 had increased greenhouse emissions from 2000 to 2004. These include most countries committed to reducing emissions under the Kyoto Protocol.
D.
Why is this In rich democracies, policies that might curb greenhouse gases require politicians and the public to act in exceptionally "enlightened" ways. They have to accept "pain" now for benefits that won’t materialize for decades, probably after they’re dead. And even if rich countries cut emissions, it won’t make much difference unless poor countries do likewise and so far, they’ve refused because that might jeopardize their economic growth and poverty-reduction efforts.
E.
The notion that there’s only a modest tension between suppressing greenhouse gases and sustaining economic growth is highly dubious. Stern arrives at his trivial costs—that 1 percent of world GDP in 2050—by essentially assuming them. His estimates presume that, with proper policies, technological improvements will automatically reconcile declining emissions with adequate economic growth. This is a heroic leap. To check warming, Stern wants annual emissions 25 percent below current levels by 2050. The IEA projects that economic growth by 2050 would more than double emissions. At present, we can’t bridge that gap.
F.
The other great distortion in Stern’s report involves global warming’s effects. No one knows what these might be, because we don’t know how much warming might occur, when, where, or how easily people might adapt. Stern’s horrific specter distills many of the most terrifying guesses, including some imagined for the 22nd century, and implies they’re imminent. The idea is to scare people while reassuring them that policies to avert calamity, if started now, would be fairly easy and inexpensive.
【单选题】（299）是（） A.相同 B.部分重叠 C.连续 D.不重叠且不连续
A.
对一路信号的载波频率为f0，进行FSK调制后的信号频率分别为f1和f2(f1＜f2)，则三者的关系是 (298) 。当对多路信号进行调制时，调制后各信号的频谱 (299) 。信号到达接收端后通过 (300) 分离各路信号。WDM与FDM工作方式相似，但WDM调制的是 (301) 。ILD是 (302) 使用的设备。
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