问题补充:
is a best-known secret in success that get ready in much of our life and you may make the most of the opportunity.
A. What
B. As
C. It
D. That
答案:
A. What
B. As
(答案→)C. It
D. That
解析:句意:成功最著名的秘密是一生做好充分的准备那么,你就可以充分利用人生的机会。A. What什么; B. As正如;C. It它,可以做形式主语或宾语; D. That那。It is a best-known secret in success that...相当于As is a best-known secret in success,....或者What is a best-known secret in success is that......。由句意可知选C。
考点: 考查代词的用法。