如图所示，理想变压器原、副线圈匝数n1∶n2∶n3=3∶2∶1,线圈II上接有“8 V，8 W”的灯泡L1、L2，线圈III上接有“6 V，9 W”的灯泡L3、L4，原线圈上接有电阻R1=6Ω，当a、b两端接交变电源后，L1、L2正常发光（灯泡电阻不随温度变化），则交变电源的输出功率为( )
| A．24W | B．48W |
| C．36W | D．72W |
_____ is it?
It’s 8:00.
A. What time B. When C. How
______ is the third day of the week.
A. Monday B. Wednesday C. Tuesday
She is ______ her pencils in her pencil case.
A. putting B. putting C. put
What’s ______ name?
A. you B. your C. You
Where is Jenny?
______ is in the classroom.
A. She B. Her C. His