题干
.
The French pianist who had been praised very highly _______ to be a great disappointment.
The French pianist who had been praised very highly _______ to be a great disappointment.
A：turned u
B：turned i
C：turned out
D：turned dow
答案(点此获取答案解析）
C
O2(g)==H2O(g);△H3，则△H1、△H2和△H3的关系是
