A:2 2 <r< 17
B:17 <r<3 2
C:17 <r<5
D:5<r< 29
____ (talk) with your parents often is a good way to make them understand you.
这几天我总是感觉身心疲惫。头昏脑胀,上课反应迟钝,看书注意不集中,学习效果差,真着急。这时候,我应该( )
①听一段舒缓的音乐,放松放松 ②打打球,做做运动
③不管三七二十一,继续学习 ④上医院,我肯定是生病了