Gaokao Math Practice Question
1. （5 分) 已知集合 $A=\{x|| x \mid \leqslant 2, x \in R\}, B=\{x \mid \sqrt{x} \leqslant 4, x \in Z\}$, 则 $A \cap B=(\quad)$
- A.$(0,2)$
- B.$[0,2]$
- C.$\{0,2\}$
- D.$\{0,1,2\}$
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