【单选题】【消耗次数：1】
睾丸内产生雄激素的细胞是
①
精原细胞
②
睾丸间质细胞
③
精子细胞
④
支持细胞
⑤
初级精母细胞
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相关题目
【单选题】
有关睾丸支持细胞的描述下述哪项错误（）
①
光镜下细胞呈不规则锥体形，边界清楚
②
核染色浅，核仁明显
③
基部紧贴基膜，顶部直达管腔
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细胞侧面和腔面镶嵌着各级生精细胞
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侧面的紧密连接将生精上皮分隔为基底室和近腔室
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下列关于睾丸支持细胞特点的描述错误的是（）
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多层排列，轮廓清晰可辨
②
核常不规则，着色浅
③
细胞基部紧贴基膜
④
胞质内有多种发达的细胞器
⑤
相邻支持细胞间有紧密连接
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正确
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Learning English words consists of two major tasks: _______.
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pronouncing a word and spelling a word
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pronouncing a word and using a word
③
knowing a word and spelling a word
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knowing a word and using a word
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social
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cognitive
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determination
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Lexical competence consists of _______.
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pronunciation knowledge and productive knowledge
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receptive knowledge and productive knowledge
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pronunciation knowledge and receptive knowledge
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spelling knowledge and productive knowledge
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Audience is the only factor that a speaker/writer needs to consider when making a choice of words.
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The most notable language variation is at the level of words people choose --- lexical variation.
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正确
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An adverb collocation refers to a chunk that is often used adverbially, with or without an adverb in it.
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正确
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For formal English, we’d better NOT choose_______.
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words of glorification
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“in addition to”is a/an_______ collocation.
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noun
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conjunction
③
preposition
④
adverb