A:美国只是名义上获得独立
B:各州对《邦联条例》不满
C:美国邦联制存在明显弊端
D:各州与邦联矛盾不可调和
(____)A. Orange, orange. Sit down.
(____)B. Black, black. Stand up.
(____)C. White, white. Touch the ground.
(____)D. Brown, brown. Turn around.
(____)E. Red, red. Carry your bag.
几种常见物质的pH范围如表,其中酸性最强的是( )
物质
酸奶
鸡蛋清
牙膏
肥皂水
pH范围(常温)
4~5
7~8
8~9
10~11