不好意思 因为伤咖上不去 所以有问题就只能来这里请教了 想请问几题CR的问题 Although fullerenes--spherical molecules made entirely of carbon--were first found in the laboratory, they have since been found in nature, formed in fissures of the rare mineral shungite. Since laboratory synthesis of fullerenes requires distinctive conditions of temperature and pressure, this discovery should give geologists a test case for evaluating hypotheses about the state of the Earth's crust at the time these naturally occurring fullerenes were formed. Which of the following, if true, most seriously undermines the argument? (A) Confirming that the shungite genuinely contained fullerenes took careful experimentation. (B) Some fullerenes have also been found on the remains of a small meteorite that collided with a spacecraft. (C) The mineral shungite itself contains large amounts of carbon, from which the fullerenes apparently formed. (D) The naturally occurring fullerenes are arranged in a previously unknown crystalline structure. (E) Shungite itself is formed only under distinctive conditions. 这题找反驳 但我其实看不太出来D和原文的反驳怎麽建立的? 我选了B 错了 想请教 -- "在这一年 我找到了光芒 在日复一日 整日黑闇的人生中 我终於找到了属於我的光芒" --

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