A:矛盾主次方面的辩证统一
B:肯定和否定的辩证统一
C:主次矛盾的辩证统一
D:矛盾普遍性和特殊性的辩证统一
不论较近或较远的物体,对于正常人来说,都能使物像落在视网膜上,这是因为( )
Football
People call it “the first sport in the world”. There are two teams in the football field during a game. Each team has eleven players.
Tennis
There is a big net in the middle of the court(球场). Each player has a racket(球拍)in his hand. Two or four players can play it together.
Golf(高尔夫球)
Golf comes from Scotland. It means green, oxygen, light and foot. People play it on the outdoor grass. They hit the white balls into the small holes with a stick.
Basketball
America is the hometown of basketball. This sport is famous for NBA.
There are two teams with ten players on the basketball court. They can't run with the ball in their hands.
在图所示的电路中,电源电压保持不变.闭合电键S,当滑动变阻器的滑片P向右移动时,变小的是( )