题干
If you _____ the meeting place in greater detail, I _____ so much time looking for it.
A：described; wouldn’t waste
B：had described; wouldn’t have wasted
C：would have described; had wasted
D：described; wasted
答案(点此获取答案解析）
B
产生黄绿色气体；②向FeCl2溶液中通入少量实验①产生的气体，溶液变黄色。下列判断正确的为