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[问答] 逻辑10套exe3几道题的疑惑 [复制链接]

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发表于 2013-8-16 17:14:59 |显示全部楼层

4.Although spinach is rich in calcium, it also contains large amounts of oxalic acid, a substance that greatly impedes calcium absorption by the body. Therefore, other calcium-containing foods must be eaten either instead of or in addition to spinach if a person is to be sure of getting enough calcium.
Which of the following, if true, most seriously weakens the argu-ment above?
(A)Rice, which does not contain calcium, counteracts the effects of oxalic acid on calcium absorption.
(B) Dairy products, which contain even more calcium than spinach does, are often eaten by people who eat spinach on a regularbasis.
(C) Neither the calcium nor the oxalic acid in spinach is destroyed when spinach is cooked.
(D) Many leafy green vegetables other than spinach that are rich in calcium also contain high concentrations of oxalic acid.
(E) Oxalic acid has little effect on the body's ability to absorb nutrients other than calcium.
答案A

10. Which of the following most logically completes the
argument below?
Alone among living species, human beings experience adolescence, a period of accelerated physical growth prior to full maturity. Whether other hominid species, which are now all extinct and are known only through the fossil record, went through adolescence cannot be known, since
(A) the minimum acceleration in physical growth
that would indicate adolescence might differ
according to species
(B) the fossil record, though steadily expanding, will
always remain incomplete
(C) detecting the adolescent growth spurt requires
measurements on the same individual at differ-
ent ages
(D) complete skeletons of extinct hominids are
extremely rare
(E) human beings might be the first species to bene-
fit from the survival advantages, if any, con-
ferred by adolescence

答案C

12.Conservationists have believed that by concentrating their preservation efforts on habitats rich in an easily surveyed group of species, such as birds, they would thereby be preserving areas rich in overall species diversity. This belief rests on a view that a geographical
area rich in one group of species will also be rich in the other groups characteristic of the entire regional climate zone.
Which of the following findings about widely scattered tracts 10 kilometers by 10 kilometers in a temperate climate zone would most seriously challenge the conservationists' assumptions?
(A) The tracts show little damage from human intrusion and from pollution by human activities.
(B) Where a certain group of species, such as birds, is abundant, there is also an abundance of the species, such as insects, on which that group of species feeds, or in the case of plants, of the land and water resources it requires.
(C) The area of one of the tracts is generally large enough to contain a representative sample of the organisms in the region.
(D) There is little overlap between the list of tracts that are rich in species of butterflies and the list of those that are rich in species of birds.
(E) The highest concentration of individuals of rare species is found where the general diversity of species is greatest.

答案D

对于第4题，说的是菠菜虽然富含钙，但是由于含有oxalic acid，会阻碍钙的吸收，所以任何其他含钙的食品都必须和菠菜分开食用，因此个人觉得选B,B正好与本文观点相反。

对于第10题，我不反对答案，但是觉得选项C文章中也推不出来。

对于12题，说的是一些人认为保护一些特点的物种会有利于全部物种多样性的保护，所以个人感觉选B，答案D感觉和文章没多大关系。

希望大家指教！谢谢！