The passage focuses on . It is believed that a new technique to will probably be found.

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问题 The passage focuses on ______.
It is believed that a new technique to ______ will probably be found.

选项 A、recycle old aluminum products
B、discover more bauxite ores
C、make aluminum by putting ore particles under water
D、take out aluminum magnetically from poorer ores

答案D

解析本题的依据是第一段最后一句，关键部分是Poorer ores，have found a way to obtain aluminum magnetically。

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本试题收录于： GCT工程硕士（英语）题库专业硕士分类

GCT工程硕士（英语）

专业硕士

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The passage focuses on ______. It is believed that a new technique to ______ will probably be found.

GCT工程硕士（英语）

专业硕士

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Whichofthefollowingisthemainpurposeofthisannouncement?Timesformoviesandconcertsarenotlistedinthisannouncem

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