如图所示的电路中,电源两端电压恒定为6V,定值电阻R1上标有“10 Ω,2.5W”,滑动变阻器R2上标有“50 Ω,2A”字样.当开关S闭合后,滑动变阻器的滑片P由b端移到a端的过程中,为了保证电路中的元件不损坏,下列说法中正确的是( )
Are you having a picnic? A. Yes, we aren’t. B. No, we aren’t.
Why do you like spring? A. Because I can plant trees. B. Because I can make a snowman.
What’s the weather like in summer? A. It’s windy and cool. B. It’s sunny and hot.
What do you do on the weekend? A. I watch TV B. I’m watching TV
Hi, John. Do you want ______ to the Children’s Center? A. to go B. go C. going