什么是金融体系的内在脆弱性假说？

A. The best fish swim near the bottom.
B. We have finished our work.
C. I found him a new textbook.
D. His face turned pale at the news.

A. He worked out the difficult problem.
B. Suddenly the music came to a stop.
C. The president awarded him the first prize.
D. I warned him not to be late.