In winter, the town        by snow, so most of time we have to stay at home.  

阅读下面的文字，完成小题。

    ①忽然有一种自私的念头触动了我。我从破碎的窗口伸出手去，把两枝浆液丰富的柔条牵进我的屋子里来，教它伸长到我的书案上，让绿色和我更接近，更亲密。我拿绿色来装饰我这简陋的房间，装饰我过于抑郁的心情。我要借绿色来比喻葱茏的爱和幸福，我要借绿色来比喻猗郁的年华。我囚住这绿色如同幽囚一只小鸟，要它为我作无声的歌唱。

    ②绿的枝条悬垂在我的案前了，它依旧伸长，依旧攀缘，依旧舒放，并且比在外边长得更快。我好像发现了一种“生的欢喜”，超过了任何的喜悦。从前我有个时候，住在乡间的一所草屋里，地面是新铺的泥土，未除净的草根在我的床下茁出嫩绿的芽苗，蕈菌在地角上生长，我不忍加以剪除。后来一个友人一边说一边笑，替我拔去这些野草，我心里还引为可惜，倒怪他多事似的。

    ③可是每天在早晨，我起来观看这被幽囚的“绿友”时，它的尖端总朝着窗外的方向。甚至于一枚细叶，一茎卷须，都朝原来的方向。植物是多固执啊！它不了解我对它的爱抚，我对它的善意。我为了这永远向着阳光生长的植物不快，因为它损害了我的自尊心。可是我囚系住它，仍旧让柔弱的枝叶垂在我的案前。

    ④它渐渐失去了青苍的颜色，变成柔绿，变成嫩黄，枝条变成细瘦，变成娇弱，好像病了的孩子。我渐渐不能原谅我自己的过失，把天空底下的植物移锁到暗黑的室内；我渐渐为这病损的枝叶可怜，虽则我恼怒它的固执，无亲热，我仍旧不放走它。魔念在我心中生长了。

    ⑤我原是打算七月尾就回南去的。我计算着我的归期，计算这“绿囚”出牢的日子。在我离开的时候，便是它恢复自由的时候。

下图中，三角形的三条边相等，则每个角是(   )。

可用于鉴别以下三种化合物的一组试剂是                          
①银氨溶液      ②溴的四氯化碳溶液 
③氯化铁溶液                      ④氢氧化钠溶液

完形填空
   It was on such a cold morning, near Oxford Maryland.    1   I looked out of the window, I found the night’s snow had painted a completely white world. Suddenly a large Canada goose came into my sight. It was standing very still with   2 wings folded to its sides. Its feet were frozen to the ice of the river and it couldn’t move.
   Then from the dark sky, I saw a line of swans moving freely. When they noticed the goose, they landed on the ice as   3   as possible. As the 4  came close to the goose, I was          
    5  that those great swan bills might hurt the goose’s body.
    Amazingly instead, those bills began to  6 on the ice. It went on for  7  an hour. In the end, the goose was free. The swans rose again, and circled in the sky, waiting to see the   8  of their work.
   However, the goose was still standing on the ice and   9 fly because of some ice held in its feathers. Then four of the swans watching in the sky came down to help it move the     10  
away. Luckily, the goose was    11  and could move again.
  When the goose spread its wings to their fullest, the four swans flew up into the sky and joined the circling group. They went on their journey to their secret land. Behind them, the goose was flying with joy. It  12 them and joined the last end of the line.
    I    13them until they disappeared over the tips of the farthest trees. Only then did I realize that tears were running  14 my face. The swans were so warm-hearted that they        15the goose.
    This is a true story. I always think of it in the bad moments, and tell myself, “If so for birds, why not for man?”