正确答案: D

现代科学技术发展日新月异，研究领域不断拓展；科学无禁区，不过并非没有科学伦理的规范。

题目：下列各句中，没有语病的一句是

解析：D

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举一反三的答案和解析：

[单选题]______________________________________________________________________A dictionary entry has many elements: multiple definitions, syllabication, preferred spelling and pronunciation (some words have more than one acceptable spelling and pronunciation), and part-of-speech labels. Some entries also include plurals and capitalized forms, synonyms, antonyms, and derivatives. Americanisms and etymologies may be provided along with usage notes, cross-references, and idioms.

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[单选题]禾本科植物小穗中，芒通常着生于( )上。

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