.Few people paid full attention to their health conditions _____ they were seriously ill.

A．when

B．if

C．until

D．before

小儿约束法的注意事项是

A．定时松解，观察皮肤及血液循环情况

B．局部约束时，仍需满足其他部位肢体活动

C．安抚患儿减少其恐惧

D．结扎要紧一些

E．结扎或包裹松紧适宜