Eight percent of
2017-03-06 16:24:43 3 举报AI智能生成
Gre reading p4
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<span lang="EN-US" style="font-size:10.5pt;font-family:<br>"微软雅黑",sans-serif;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:<br>minor-bidi;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:<br>AR-SA">bauxite</span>
best ore
richest in large quantities
yield alumina
<span lang="EN-US" style="font-size:10.5pt;font-family:<br>"微软雅黑",sans-serif;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:<br>minor-bidi;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:<br>AR-SA">alumina</span>
intermediate production of producing aluminum
not found in large deposits of high purity
impractical source
<span lang="EN-US" style="font-size:10.5pt;font-family:
"微软雅黑",sans-serif;mso-bidi-font-family:"Times New Roman";mso-bidi-theme-font:
minor-bidi;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:
AR-SA">silicates</span>
<span style="font-size: 14px;"> resistant to analysis</span><br>
unsuitable alternatives to bauxite
more energy is required to get alumina
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