It is known to us it was not until 1938 the first colour TV programme began to be broadc

问题补充：

It is known to us it was not until 1938 the first colour TV programme began to be broadcast in the world.

A. that, which

B. /, /

C. that, that

D. which, that

答案：

A. that, which

B. /, /

(答案→)C. that, that

D. which, that

解析：第一空是that引导的主语从句，第二空是强调句型it is...that...；句意是直到1983年世界上第一个彩色电视节目播出，是众所周知的。