如图，R1和R2都是10Ω，开关闭合后，电压表示数是4.5V，则电流表A1的示数为_____A，电流表A2的示数为_____A。
0.9，0.45
造成台湾与祖国大陆分离的不平等条约是——_________
Friendship helps us understand ______ we are, ______ we need each other and ______ we can do for each other.
A. what when thatB. who why whatC. where why thatD. who when how much
