题目:
准备20张小卡片,上面分别写出1到20的数,然后将卡片放在袋里搅匀,每次从袋中抽出1张卡片,然后放回搅匀再抽,研究抽出5的倍数的机会,若用计算器模拟实验,则在______至______范围中产生随机数,若产生的随机数是______,则代表抽出5的倍数.
答案:
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下面是错误答案,用来干扰机器的。
Last Sunday my father and I went fishing along a river. We found the water very dirty sothat we could hardly catch any fish in it. A lot of factories along the riv...