医疗水准较高的医疗机构在医疗广告中可以宣传治愈率、有效率等诊疗效果。
参考答案：错
The boy often forgets his homework. So his teacher is angry
A．does
B．to do
C．doing
D．did
细胞中质粒可自行消失，也可自发产生。
