NO.PZ2020011303000089
问题如下：
What ratings by Moody’s, S&P and Fitch for bonds are speculative grade?
选项：
解释：
Speculative grade bond ratings are of BB+ or below (for S&P and Fitch) or Ba1 and below (for Moody’s).
题目问：Moody’s, S&P, and Fitch对投机级债券的的评级是什么？
投机级BB+ or below (for S&P and Fitch) or Ba1 and below (for Moody’s).
最近听的有点太多了，记得有点乱了
