——What do you think of your parents?——They are always strict ____ our studies and they often make me ______ too much homework .
A:with , to do
B:in , to do
C:about , do
D:at , do
用如图所示装置探究碳酸和苯酚的酸性强弱,下列叙述不正确的是(部分夹持仪器省略)( )