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Ⅳ.根据句意及首字母或汉语提示完成单词（每小题1分，满分5分）
51. There is much ice. Please be careful, or you’ll f_________ down.
52. People all over the world love _________(和平).
53. The earth is one of the eight ________(行星).
54. There’re many f_________ near here. They pollute the air and water.
55. I don’t understand the article, because there’re so many new w________.
Ⅴ.用括号里所给单词的适当形式填空（每小题1分，满分5分）
56. I don’t think it’s a good idea. I _______ (agree) with you.
57. It’s _________(danger) to play in the street.
58. It’s _________(possible) for me to finish the work in such a short time.
59. He was surprised by all the ________(pollute) on the beach.
60. She is friendly to others, so she has _______ (many) friends than me.