Affixes are generally classified into three subtypes, namely, prefix, suffix, and infix, depending on their position around the root or stem of a word.
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The smallest units that affect meaning are morphemes.
A. 对
B. 错
Root refers to the base form of a word that can be further analyzed without loss of identity.
A. 对
B. 错
下列元素中,原子半径最小的是()
A. Na
B. Al
C. P
D. Cl
2019年诺贝尔化学奖颁发给美国的约翰 古迪纳夫、英国的斯坦利 惠廷厄姆、日本的吉野彰三位科学家,以表彰他们在锂电池领域的贡献。LiFePO₄为锂电池常用正极材料之一,该化合物中的元素原子半径最小的是()
A. Li
B. Fe
C. P
D. O