Question

________is known to all,China will be an ________ and powerful country in 20 or 30 years' time.

A. That;advancing
B. This;advanced
C. As;advanced
D. It;advancing

Answer 1

答案C
关系代词as引导的非限制性定语从句，它的先行词是一个句子，而不是一个名词或代词，从句修饰或补充整个主句的内容，且从句可置于句首，本题中关系代词as在从句中作主语。advancing：发展中的；advanced：发达的。