题目

观察下列不等式:,,,…照此规律,第五个不等式为__________. 答案:【答案】【解析】由上述不等式,归纳出表达式的左侧与右侧分子与分母的特征写出一个正整数n(n≥2)有关的一般性结论;因为,所以观察前三个不等式知,等式右边分数分母分别为,,,分子分别为4,6,8,因此其第五个不等式为. 根据句意,用括号中所给词的适当形式填空,并将所填单词写在答题卡相应位置。(共 5小题;每小题1分,分)1.We often have a book _______(sell) on the weekend.2.The English test is on April __________(nine).3.He often has some __________(tomato) for dinner.4.It’s ______________(relax) to play soccer after school.5.I don’t want __________(is) fat.
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