用3个完全相同的小正方体组成如图所示的几何体，则它的俯视图是（　　）

（A）

School Day Show

Date: March 24

Time: 8:00 am~11:00 am

Place: The school music hall

Rules:

★ Don't bring friends from other schools. If you do, we will let them go.

★ Keep quiet during the show. If you talk loudly, you may disturb(打扰) others.

★ Don't bring food or drinks into the hall.

★ Turn off your mobile phones. If you don't do so, you'll have to leave.

★ Don't smoke. If you do, we will ask you to leave.

    For more information, please call Miss Green at 6557-0023. Or you can click on schoolday.com.cn.

标有“6V 3W”的灯泡接在电压为9V的电源上，要能正常发光，应____ 联一个____ Ω的电阻，此时这个电阻所消耗的功率为____W。

选词填空。

就要 正在 已经

①荷花____开了不少了。

②叶____风中舞蹈。

③____开学了，我们要提前做好开学前的准备工作。