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氮循环属于典型的沉积型循环。 ( )
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Fears of "mad cow" disease spread (1) the globe last week (2) South Africa, New Zealand and Singapore joining most of Britain’ s European Union partners in (3) imports of British beef. In London, steak restaurants were empty follwing the March 20 announcement by scientists that they had found a (4) link between mad cow disease from British beef and its human (5) , Creutzfeldt-Jakob disease(CJD) . Efforts to reassure consumers and governments proved (6) . France, Germany, Italy, Finland and Greece were among countries which announced bans (7) British beef shipments. A committee of EU veterinary experts, meeting in Brussels, (8) new protective measures but said transmission of the disease from cattle to humans was unproven and did not (9) a general ban on British beef exports. Britain’s own main consumer group advised people to (10) beef if they wanted to be absolutely sure of not (11) CJD which destroys the brain and is always (12) . "Could it be worse than AIDS" The stark headline in Friday’s Daily mail newspaper encapsulated the fear and uncertainty (13) Britain. CJD (14) humans in the same way that BSE makes cows mad—by eating away nerve cells in the brain (15) it looks like a spongy Swiss cheese. The disease is incurable. Victims show (16) of dementia and memory loss and usually die (17) six months. Little is known (18) sure about the group of diseases known collectively as spongiform encephalopathies, which explains (19) some eminent scientists are not prepared to (20) a human epidemic of AIDS-like proportions.
在数量金字塔、生物量金字塔和能量金字塔三种生态金字塔中，只有数量金字塔总是呈典型的下宽上窄的正金字塔形。 ( )
Text 2 The producers of instant coffee found their product strongly resisted in the market places despite their product’s manifest advantages. Furthermore, the advertising expenditure for instant coffee was far greater than that for regular coffee. Efforts were made to find the cause of the consumers’ seemingly unreasonable resistance to the product. The reason given by most people was dislike for the taste. The producers suspected that there might be deeper reasons, however. This was confirmed by one of motivation research’s classic studies, one often cited in the trade. Mason Haire, of the university of California, constructed two shopping lists that were identical except for one item. There were six items common to both lists: hamburger, carrots, bread, baking powder, canned peaches, and potatoes, with the brands or amounts specified. The seventh item, in fifth place on both lists, read "1 lb. Maxwell House Coffee" on one list and "Nestle Instant Coffee" on the other. One list was given to each one in a group of fifty women, and the other list to those in another group of the same size. The women were asked to study their lists and then to describe, as far as they could, the kind of women ("personality and character") who would draw up that shopping list. Nearly half of those who had received the list including instant coffee described a housewife who was lazy and a poor planner. On the other hand, only one woman in the other group described the housewife, who had included regular coffee on her list, as lazy; only six of that group suggested that she was a poor planner. Eight women felt that the instant-coffee user was probably not a good wife! No one in the other group drew such a conclusion about the housewife who intended to buy regular coffee. According to the passage, many women preferred regular coffee to instant coffee because ______.
Fears of "mad cow" disease spread (1) the globe last week (2) South Africa, New Zealand and Singapore joining most of Britain’ s European Union partners in (3) imports of British beef. In London, steak restaurants were empty follwing the March 20 announcement by scientists that they had found a (4) link between mad cow disease from British beef and its human (5) , Creutzfeldt-Jakob disease(CJD) . Efforts to reassure consumers and governments proved (6) . France, Germany, Italy, Finland and Greece were among countries which announced bans (7) British beef shipments. A committee of EU veterinary experts, meeting in Brussels, (8) new protective measures but said transmission of the disease from cattle to humans was unproven and did not (9) a general ban on British beef exports. Britain’s own main consumer group advised people to (10) beef if they wanted to be absolutely sure of not (11) CJD which destroys the brain and is always (12) . "Could it be worse than AIDS" The stark headline in Friday’s Daily mail newspaper encapsulated the fear and uncertainty (13) Britain. CJD (14) humans in the same way that BSE makes cows mad—by eating away nerve cells in the brain (15) it looks like a spongy Swiss cheese. The disease is incurable. Victims show (16) of dementia and memory loss and usually die (17) six months. Little is known (18) sure about the group of diseases known collectively as spongiform encephalopathies, which explains (19) some eminent scientists are not prepared to (20) a human epidemic of AIDS-like proportions.
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