题干
Mrs. Green wants to buy that kind of cloth because she___________ that the cloth__________ very well.
A：has been told; washe
B：is told; is washed
C：has been told; is washed
D：is told; is washed
答案(点此获取答案解析）
A
O2+HbCO，37 ℃时，该反应的平衡常数K=220。HbCO的浓度达到HbO2浓度的0.02倍，会使人智力受损。据此，下列结论错误的是（ ）