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问题 填空题

已知等差数列{an}的公差d=4，且a7=11，若ak+ak+1＞12，则正整数k的最小值为______．

答案

由题意，a1+6×4=11，解得a1=-13，

可得，等差数列{an}的通项公式为：an=-13+4（n-1）=4n-17．

∴ak=4k-17，ak+1=4k-13，故，ak+ak+1=8k-30．

故不等式ak+ak+1＞12化为，8k-30＞12，解得，k＞

21
4
，

可知，最小的正整数k为6．

故答案为：6

阅读理解

阅读理解。 

     It is Sunday morning. It is a nice day. Mr. and Mrs.Green take their daughter to the park. There are

many people there. Some women are drinking tea under a big tree. Some boys are playing games near a

house. A girl is sitting in a boat. She is reading a book. There are many birds in the tree. They are singing. A cat is running up a tree. It wants to catch(抓)the birds.

根据短文内容，判断正（T）误（F）。

(      )1. Mr. and Mrs. Green are in the park.

(      )2. Some women are reading books.

(      )3. Some boys are swimming in the river.

(      )4. A girl is sitting in a boat.

(      )5. A cat and some birds are in the tree.
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多项选择题

质量监督人员的监督范围包括（）。

A.监督质量管理主体

B.上班时间

C.监督维修质量

D.下班时间

E.工效
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