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Which of the following most logically completes the argument?
Before the nineteenth century in Europe, grain, which was mostly eaten as bread or porridge, was often stored in conditions that allowed the growth of certain fungi. These fungi produce a toxin that when ingested increases susceptibility to disease unless the toxin has been exposed to boiling temperatures / for an extended period. Therefore, before the nineteenth century the Europeans' reliance on grain reduced their resistance to disease, since __________.
(A) bread and porridge were often prepared in ways that raised the temperature to the boiling point only for a brief period
(B) each family typically stored a winter's supply of grain in a wooden or stone granary (得不出方向)
(C) the toxin-producing fungi have a distinctive aroma that enables people to distinguish contaminated from uncontaminated grain(反)
(D) there were a large number of infectious diseases prevalent in Europe at that time (无关)
(E) people who are malnourished are more likely than those who are well fed to be susceptible to disease (无关比较;跳脱主题)
because the natural predation process cannot be adequately restored and perpetuated without the gray wolf.
-->park officials should reintroduce the gray wolf into Westwoods National Park In order to restore the park's animal ecosystem 判断
Which of the following, if true, most support the argument above?
(A) In the absence of any natural predators, the elk population has become so large that it is slowly stripping the park of much of its ground cover.
(B) Most visitors to national parklands are unaware of the types of animals that lived within any park's original ecosystem.(无关)
(C) The reintroduction of the gray wolf into Westwoods National Park would not have any impact on the income generated for the park by permitting sport hunting in the park.
(D) It was government extermination programs that nearly made gray wolves extinct between 1888 and 1918; over 81,000 were killed in the vicinity of Westwoods National Park. (无关;讲没有狼的原因)
(E) Westwoods National Park contains less than half of the area; the remainder has been developed as ranch land.(无关)
AA |
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