水平分析是一种基于对过去利率分析的债券组合管理策略。( )
参考答案:错
用适当的句子补全对话。
A: Good morning!
B: Good morning! ________________?
A: Yes, please. ________________.
B: Come this way. Here are the sweaters.
A: This white one is nice. ________________?
B: 49 dollars.
A: OK. ________________. Here is the money.
B: Thank you.
A: ________________.
下列物质的主要成分属于天然纤维素的是
A.聚乙烯
B.尼龙
C.棉花
D.涤纶