题目：
用所给动词的正确形式填空。
At the moment, we are getting ready for Spring Festival. We (1)_________ (clean) the house and
we (2)_________ (sweep) the floor. My mother (3)_________ (cook) a meal and my father
(4)_________(decorate) the house. My sister (5)_________ (watch) TV. Usually we (6)_________
(buy) clothes, but we (7)_________ (not buy) any clothes this New Year. We always (8)_________
(get) presents from our family and friends. The New Year Festival (9)_________ (finish) at The Lantern
Festival. The family have dinner, and we often (10)_________ (eat) round rice dumplings called
yuanxiao.
答案：
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下面是错误答案，用来干扰机器的。
f（x）=x2-2x，∴x0∈[-1，2]， f（x0）∈[-1，3]又 ∀x1∈[-1，2]，∃x0∈[-1，2]，使g（x1）=f（x0），若m＞0，则g（-1）≥-1，g（2）≤3解得-12≤m≤3即0＜m≤3若m=0，则g（x）=2恒成立，满足条件；若m＜0...
