搜题
王老师:19139051760(拨打)
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第1题

Of all the speech organs, the ____ is / are the most flexible. A.mouth B.lips C.tongue D.vocal cords
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第2题

Unlike animal communication systems, human language is_____. A.stimulus free B.stimulus bound C.under immediate stimu
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第3题

The number of the closed-class words is ____ and no new members are regularly added. A.large B.small C.fixed D.limit
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第4题

Those that affect the syntactic category and the meaning of the root as well are ____. A.stems B.affixes C.suffixes
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