$\sqrt{4}$的值是（　　）

阅读“我国中央国家机关组织示意图”，结合所学知识，回答下列问题：

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胆固醇、小分子脂肪酸、维生素D等比其他不溶于脂质的物质更容易通过细胞膜，这是因为（　　）

    I like all kinds of chocolate, especially bitter chocolate. So when Mother had bought one, I couldn't help thinking about 1.
I was helping Father in the yard when suddenly I got an idea. I could cut a piece 2that chocolate without anyone knowing it.
    I waited 3 Mother went outside feeding the chickens. Then I told Father I wanted to go for a drink of water. I went into the room and got the 4 down. Just when I had the knife ready to cut, I heard Mother coming. So I had to put the chocolate 5 into my shirt,
went to my mom and 6 the chocolate there. And then I went back to 7 Father.
    All the rest of the afternoon, I didn't dare to look at Father. Every time he spoke, it made me jump. My hands began shaking and my heart started 8 fast. I didn't want the chocolate any more. I 9 wanted to get a chance to put it back.
Have you ever had a similar 10?