TPO16 Development of periodic Table - 英檢

※ 引述《Bonniepei (樂翻天唷)》之銘言：
: 10. It can be inferred from paragraph 3 that the significance of the
: discovery of gallium was that it supported which of the following?
: ○The idea that aluminum was correctly placed in the periodic table
: ○Mendeleyev's prediction that eka-silicon would be discovered next
: ○The organizing principle of the periodic table
: ○The idea that unknown elements existed
: Mendeleyev went further than Meyer in another respect: he predicted the
: properties of six elements yet to be discovered. For example, a gap just
: below aluminum suggested a new element would be found with properties
: analogous to those of aluminum. Mendeleyev designated this element
: "eka-aluminum" (eka is the Sanskrit word for "next") and predicted its
: properties. Just five years later an element with the proper atomic mass was
: isolated and named gallium by its discoverer. The close correspondence
: between the observed properties of gallium and MendeleyeVs predictions for
: eka-aluminum lent strong support to the periodic law. Additional support came
: in 1885 when eka-silicon, which had also been described in advance by
: Mendeleyev, was discovered and named germanium.
: 請問為什麼不是A 答案是C

直接回一篇好了

Mendeleyev went further than Meyer in another respect: he predicted the
properties of six elements yet to be discovered. For example, a gap just
below aluminum suggested a new element would be found with properties
analogous to those of aluminum. Mendeleyev designated this element
"eka-aluminum" (eka is the Sanskrit word for "next") and predicted its
properties. Just five years later an element with the proper atomic mass was
isolated and named gallium by its discoverer. The close correspondence
between the observed properties of gallium and MendeleyeVs predictions
for eka-aluminum lent strong support to the periodic law. Additional support
came in 1885 when eka-silicon, which had also been described in advance by
Mendeleyev, was discovered and named germanium.

簡單解釋
這段從頭到尾都在講 Mendeleyev以Meyer的發現做為根基，預測了六種未發現
元素的存在並預測了這六種元素的性質
而其中之一他命名為eka-aluminum

過了幾年在實驗室中，經過某種適當的原子質量分離術，發現了一種名叫gallium的元素

而gallium的元素性質與Mendeleyev預測的eka-aluminum的性質非常接近
故證明Mendeleyev根據Meyer的理論所做出的預測是正確的

所以，"發現gallium"這件事最重大的意義就是證明了predic law的正確性
根本不用去考慮其他答案

整段的邏輯架構為:
theory -> prediction1
prediction2(additional)
prediction1 comfirmed -> theory plausible
additional prediction2 comfirmed -> theory comfirmed

至於A為什麼錯
從頭到尾這段的重點就不是aluminum(只是一個fact，文章架構中只出現在for example中)
，更沒提到aluminum是否在週期表上放對還放錯地方

BTW
Mendeleyev就是大名鼎鼎的元素週期表的發明人門得列夫
wiki一下這個老頭就知道了XD

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