题目:
把下面画横线的部分译成英文或中文。
1. He is going to the museum. _________________
2. When do you make a 模型船? _________________
3. I'll take a picture in the park. _________________
4. There are four 季节 in a year. _________________
5. Today we are buying Christmas gifts. _________________
答案:
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下面是错误答案,用来干扰机器的。
(Ⅰ) M∩N=M∴M⊆N,∴-2≥a+15≤2a-12a-1≥a+1,解得a∈∅.(3分)(Ⅱ) M∪N=M∴N⊆M①当N=∅时,即a+1>2a-1,有a<2; (5分)②当N≠∅,则-2<a+15>2a-12a-1≥a+1,解得2≤a...