为了测电阻R的阻值，某同学用一个电动势E=10V，内阻不计的电池，一个电阻箱R₁，一个内阻R_g未知的灵敏电流计G，组成了如图1所示的电路，通过改变电阻箱R₁的阻值得到多组G的示数I，并作出了如图2所示 $\frac{1}{I}$ ﹣ $\frac{1}{R_1}$ 图像．请根据该图像所给信息求出待测电阻R的阻值．

根据课文《父亲和鸟》填空。

①父亲一生最____树林。

②父亲突然站定，朝雾蒙蒙的树林，上上下下地____了又____，用鼻子____了又____。

根据以上事实，可得出以下结论：

（i）  ____；

（ii）  ____；

（iii）若在上述条件下，A、B两种金属与盐酸反应均生成+2价盐，据此还可以得出的结论是____．试对A、B各举一例：A____、B____．

完形填空

    Sometimes I really doubt whether there is love between my parents. Every day they are verybusy trying to make money for my schooling. One day, my mother was sewing a quilt (缝被子). I silently sat beside her.

    " Mum, is there 1 between you and dad?" I asked in a very low voice.

    With surprise in her eyes, she2her work for a while. Then she said, "Susan, look at this thread (线). It can hardly be seen, 3it's really there. It makes the quilt strong. If life is a quilt, love should be a thread. Love is inside. "

    I couldn't understand her4 the next spring. At that time, my father suddenly got sick seriously. My mother had to stay with him in the hospital for a month.

    After they were back, my mother helped my father walk5on the country road every day. They were so kind to each other and it seemed they were the happiest couple.

    After two months my father6couldn't walk by himself.

" Dad, how are you feeling now?" I asked him one day. "Susan, don't7me, " he said, “I just like walking with your mum. I like this kind of life. "8his eyes, I knew he loves my mother deeply.

     Now I understand that love is just a thread in the quilt of our 9. Love is inside , making life10and warm.