_______isknowntoall，Chinawillbean_______powerfulcountryin20or30years’time.
A、That；advancingC
as 可以用来引导一个非限制性定语从句，通常无明显的先行词。 as 指代的是主句陈述的内容。而 as 引导的从句既可以放于句首，也可以放于句末或句中。
句子写作：Suchanattitudewouldemphasizethevalueoflife.
What are the key features of a research paper?
Howmanypartsdoesascienceandtechnologypaperconsistof?Whatarethey?
句子写作：Thepianoplayerbegantosingloudly.
Howmanyformscanarticlesberoughlydividedinto?whatarethey?
