如图，将一个可以自由旋转的转盘等分成甲、乙、丙、丁四个扇形区域，若指针固定不变，转动这个转盘一次（如果指针指在等分线上，那么重新转动，直至指针指在某个扇形区域内为止），则指针指在丙区域内的概率是（　　）

根据短文内容，选择最佳答案。

    Some boys like wearing the same kinds of clothes as girls, and some of them have long hair. So sometimes it's hard to tell whether(是否) they are boys or girls.

    Today is Sunday. I have a walk with my grandmother in the park. My grandmother is 80 years old and she can't see well. After some time, my grandmother is tired(疲倦的), so she sits down on a chair. There is another person sitting on the chair, too.

    “Hello,” my grandmother says to the person with long hair next to her. “Can you see the girl with long hair under the big tree?”“The girl?” says the person, “No, he's my brother Mike.”

    “Oh, sorry. I don't know you are his sister.” Says my grandmother.

    “No, I'm not his sister, I'm his brother!”

 ____叫内能，物体内能大小与____、____、____等有关．与物体的机械能大小无关．物体任何情况下都具有内能． 物体一定有内能，但不一定有机械能．

阅读《幽居初夏》，完成问题。

幽居初夏

陆游

湖山胜处放翁家，槐柳阴中野径斜。

水满有时观下鹭，草深无处不鸣蛙。

箨龙^①已过头番笋，木笔犹开第一花。

叹息老来交旧尽，睡来谁共午瓯^②茶。

【注】①箨tuò龙，就是笋。木笔，又名辛夷花。两者都是初夏常见之物。②瓯ōu：小盆。

根据我国宪法规定，公民依法享有选举权和被选举权。以下行使这一权利的是（    ）