…利用你所发现的规律，写出 的末位数（个位上的数字）：____．

在《最后一课》中，下课后，韩麦尔先生“仍站在那里，头靠着墙壁，不说话”，而本文中的瑞宣老师却“狠了狠心，他走下了讲台”，“他迈门坎，没迈利落，几乎绊了一跤”，韩麦尔先生和祁瑞宣老师的这种行动说明了什么？

南方地区的主要粮食作物和糖料作物的（    ）

    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?

①X和Y两部分对照实验能证明光合作用需要CO₂ ②W和Y两部分对照实验能证明光合作用需要叶绿素    ③显色后X为蓝色，Y为棕黄色   ④木塞处所显颜色证明光合作用需要光