Pure feldspar is a colorless,transparent

免费题库2022-08-02  10

问题 Pure feldspar is a colorless,transparent mineral,but impurities commonly make it opaque and colorful.A:truly B:rapidlyC:periodically D:frequently

选项 A:truly
B:rapidly
C:periodically
D:frequently

答案 D

解析 本句意思:纯长石是一种无色、透明的矿物质,但杂质通常使它变得不透明还五颜六色的。commonly意思是“通常地”,与frequently(经常地,频繁地)意思相近。truly真实地,确实地;rapidly迅速地;periodically定期地。
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