攻破2017新gre邏輯閱讀 每日一練17.

　　2011新gre考試實(shí)施以來，參加了新版gre考試的考生都覺得閱讀部分的題難度增加了，這主要是由于新gre考試邏輯閱讀需要考生的邏輯反應(yīng)一定要比以前更快，可能考生還是有點(diǎn)不習(xí)慣，或是沒有準(zhǔn)備充足。那么，接下來的幾天，小編將給大家搜索整理一些新gre考試邏輯閱讀的練習(xí)題，希望考生能從平日的練習(xí)中總結(jié)規(guī)律，找到解題技巧。

　　Eight percent of the Earth‘s crust is aluminum, and

　　there are hundreds of aluminum-bearing minerals and

　　vast quantities of the rocks that contain them. The best

　　aluminum ore is bauxite, dined as aggregates of alumi-

　　5 nous minerals, more or less impure, in which aluminum

　　is present as hydrated oxides. Bauxite is the richest of all

　　those aluminous rocks that occur in large quantities, and

　　it yields alumina, the intermediate product required for

　　the production of aluminum. Alumina also occurs natu-

　　10 rally as the mineral corundum, but corundum is not

　　found in large deposits of high purity, and therore it is

　　an impractical source for making aluminum. Most of the

　　many abundant nonbauxite aluminous minerals are

　　silicates, and, like all silicate minerals, they are

　　15 rractory, resistant to analysis, and extremely difficult to

　　process. The aluminum silicates are therore generally

　　unsuitable alternatives to bauxite because considerably

　　more energy is required to extract alumina from them.

　　(153 words)

　　4. The author implies that a mineral must either be or readily supply which of the following in order to be classified as an aluminum ore?獲得更多gre考試咨詢點(diǎn)擊進(jìn)入>>>>澳際免費(fèi)咨詢顧問或聯(lián)系QQ客服：

　　(A) An aggregate

　　(B) Bauxite

　　(C) Alumina

　　(D) Corundum

　　(E) An aluminum silicate

　　For the following question, consider each of the choices separately and select all that apply

　　5. The passage supplies information for answering all of the following questions regarding aluminous minerals

　　□A Are aluminum-bearing nonbauxite minerals plentiful?

　　□B Do the aluminous minerals found in bauxite contain hydrated oxides?

　　□C Are aluminous hydrated oxides found in rocks?

　　6. The author implies that corundum would be used to produce aluminum if

　　(A) corundum could be found that is not contami-nated by silicates

　　(B) the production of alumina could be eliminated as an intermediate step in manufacturing alu-minum

　　(C) many large deposits of very high quality corun-dum were to be discovered

　　(D) new technologies were to make it possible to convert corundum to a silicate

　　(E) manufacturers were to realize that the world‘s supply of bauxite is not unlimited

答案：C/ABC/C

　　以上即是閱讀練習(xí)題，對(duì)于新gre考試邏輯閱讀，考生除了采取題海戰(zhàn)術(shù)，其實(shí)更應(yīng)該做的就是總結(jié)。如果能從平日的練習(xí)中找到解新gre考試邏輯閱讀題的思路，那么，要比采取題海戰(zhàn)術(shù)更好。

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