完形填空
It was Christmas evening. I just 1home from the nearby grocery store with all kinds of things. The kitchen was2with brown bags and boxes. On seeing me coming back, my youngest son, Isaiah, reached me and 3 if I would play a game with him.
I took Isaiah's 4 . He stood there and his green eyes were5. “Here is a Christmas6 for you. Please find it. You can see something silver.” he said. I began to look for it. I 7 the table in the corner and some other places.
After a few seconds, I saw there was a 8 snow globe on the top of the piano. It was silvery and beautiful. I held the cool 9 in my hands. Isaiah said to me that it was to 10 the one that he had broken the year before.. I was puzzled completely. So I bent my 11 beside him. He added12aved enough money and asked his elder brother, Logan to help him buy this one to13 the broken one. They just wanted to give me a (n)14 .
Logan nodded and smiled. When I15 the key on the bottom of the globe, the quiet room was full of elegant music. Isaiah said, “Mum, do you remember how I by accident 16 your snow globe? It broke on the ground17 the music was still going on. I was so, so sad.”His face turned a little18 . But the truth was that I did not quite 19the broken snow globe after a long time. But Isaiah had been sorry for his 20 all the time. I was sure I would keep this snow globe in my mind forever.
，其他条件不变，这时两极板间电势差为U2，板间场强为E2，下列说法正确的是（ ）
