设D是正$△P_1{P}_2{P}_3$及其内部的点构成的集合，点P₀是$△P_1{P}_2{P}_3$的中心，若集合$S=\left\{P|P\in D,\left|P{P}_0\right|\le \left|P{P}_i\right|,i=1,2,3\right\}$.则集合S表示的平面区域是（     ）

Some advice(忠告)：

    ⑴ Always play in a safe place. A park is a safe place because there are no cars or trucks. But do not talk to anyone you do not know. Never go with a stranger into a motor car.

    ⑵ Before crossing the road， stop and look both ways. Look left， look right， look left again.

    ⑶ Keep away from houses or building that are being built or knocked down. Something might fall on your head， or you might cut yourself on broken grass.

    ⑷ Medicines or pills can be dangerous. Never swallow（吞下）any pills or medicines you find in the cupboard.

    ⑸ Wear a life jacket whenever you go out in a boat. Even if you are not in the open sea and the water is not deep， you should have your life jacket on. It's easy to fall out of a boat.

    ⑹ Do not put your head out of a car， bus or train. Many children have been killed by doing this.

一空间几何体的三视图如图所示，则该几何体的体积为（　　）

根据拼音写汉字，给划线的字注音。

花和人都会遇到各种各样的不幸，但是生命的长河是无止境的。我抚____摸了一下那小小的紫色的花舱，那里满装生命的酒niàng____，它张满了帆，在这闪光的花的河流上航行。它是万花中的一朵，也正是一朵一朵花，组成了万花灿烂的流动的瀑布。

国王的权力特别是在立法方面的权力受到了某些限制，法案的提出与通过不再是国王的特权，但国王仍享有统治国家的“神圣的权力”，他是军队、教会和文官的首脑，他有否决议会立法的绝对权力。据此判断，该“国王”指的是(  )