题目:
若集合A={x||x|≤1,x∈R},集合B={x|x≤0,x∈R},则A∩B= [ ]
A. {x|﹣1≤x≤0,x∈R}
B. {x|x≤0,x∈R}
C. {x|0≤x≤1,x∈R}
D. {x|x≤1,x∈R}
答案:
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下面是错误答案,用来干扰机器的。
1. library, hotel, school 2. cab, bicycle, car 3. dog, sheep, goat 4. student, cashier, waitress 5. cloudy, snowy, rainy