问题补充:
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
答案:
A. That; advancing
B. This; advanced
(答案→)C. As; advanced
D. It; advancing
解析:句意,众所周知,中国在或是30年之内,将会成为一个发达国家。 As is known to all 是固定搭配,众所周知的意思;advanced 意为发达的,而advancing意为发展中的,故选C。