你知道通过电流表和电压表可以改变用电器的连接方式吗?给你如图所示的电路,填入不同的电表,使它们的连接方式不同,分析正确的是( )
A:开关闭合,若甲表示电压表,乙表是电流表,则电阻R1、R2并联
B:开关断开,若甲表示电流表,乙表是电流表,则电阻R1、R2串联
C:开关断开,若甲表示电压表,乙表是电压表,则电阻R1、R2串联
D:开关闭合,若甲表示电流表,乙表是电压表,则电阻R1、R2并联
对于一定质量的理想气体,下列说法正确的是( )
阅读短文,从方框中选择适当的单词填空。
The London Olympic Games is still a few months away. But in the US, kids had ____ in a mini-Olympics competition.Michelle Obama(米歇尔.奥巴马), the First Lady of the US, held the games. Children played basketball ____ four-time gold medalist(金牌得主) Lisa Leslie. They ____ played soccer and tennis with famous players. The ____ of the competition was to teach kids the Olympic spirit(精神). “The most important thing is not to win, ____ to take part.” The First Lady said. How meaningful it is!
小明学习了力的知识后,对静止在水平桌面上的文具盒来进行分析,下列说法正确的是( )
She will ____ good-looking.(be, have).