解析：The (system) of chemical symbols, f_考试试题_托福

【单选题】The (system) of chemical symbols, first devised about 1800. gives a concise and (instantly) recognizable description of
A、element (or) compounD、

A、system
B、instantly
C、a
D、or

网考网参考答案：C
网考网解析：
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