___\_is a grammatical category used for the analysis of word classes displaying such contrast as singular, dual, plural, etc. ______.
A．Category
B．Number
C．Gender
D．Case
李白诗赞：“洛阳名工铸为金，博山千琢复为缕，上刻秦女携手仙。”这句诗是描述（ )。
A．博山炉 B．宣德炉 C．错金银 D．鎏金
What, in your view, makes a text a text, rather than a series of unconnected utterances？ What are the implications of your answer for second language teaching？
Endocentric construction
Why is it important to know the relations a sign has with others, such as syntagmatic and paradig-matic relations？
考古发掘材料说明，中国古代铜镜以（ )出土的数量最多。
A．唐镜 B．战国镜 C．汉镜 D．宋镜
