——Grandpa has changed a lot.——So he has. He spends more time than he used to ______ games with the children.
A:play
B:playing
C:played
D:plays
当北半球夏至日时,出现极昼现象的地区是( )
随着生活水平的提高,小轿车已进入千家万户.下列有关小轿车说法正确的是( )
关于北纬30°纬线的说法,错误的是( )