天一大联考 2022-2023学年高中毕业班阶段性测试(四)4语文答案

天一大联考 2022-2023学年高中毕业班阶段性测试(四)4语文答案，九师联盟答案网已经编辑汇总了天一大联考 2022-2023学年高中毕业班阶段性测试(四)4语文答案的各科答案和试卷，更多九师联盟答案请关注九师联盟答案网。

十2n十2【答案】D【解析】将数列113212343,一2亏，一3…变为3，一年亏一6…，从而可知分子的规律为n,分母的规律为n十2，再结合正负的条件，可知其通项为4n=(一1)-1”n+2

When they tried in vain to rescue the brothers and Tabatha,a risky idea came to them.To keep themselvesfrom losing their footing in the rip current,they began holding on to one another to form a human chainextending from the beach all the way out to the struggling boys and Tabatha.They stayed linked tightly andmanaged to ensure they were safe by making their feet firmly planted in the sand.However,that required morelinks-probably dozens of them.Shaun spotted other swimmers on the beach and shouted,"Don't just standthere！Come and help.”By then,more swimmers had also noticed the group in trouble and rushed to join the human chain.One byone,link by link,total strangers walked into the waves and grasped one another by the wrists,determined thatno one would die on that beach.At last,they made it and Tabatha and the two brothers were saved!"Thosepeople on the beach are angels on earth,"said Roberta,showing her appreciation."Whether it is the first personor the last person in the chain,they are all our heroes,who helped get our family out of trouble."