下列句子中，没有语病的一项是

连一连．

阅读短文，选择正确答案。
    We are students of Yuying Primary School(小学). In our school, there are many teachers and students. There are twenty­six girls and twenty­four boys in our class. Our classroom is big. There are six windows and two doors. The walls(墙) are white. There are two pictures on the wall. A big blackboard is in the front of the classroom. Our desks and chairs are new. Our classroom is very nice. I like it very much.

空调安装工人一共要安装72台空调，第一天安装了9 台，剩余的由一人在9天内完成，平均每天安装多少台？

如果一元一次不等式组$\left\{\begin{array}{c}x>3\\ x>a\end{array}\right.$的解集为＞3.则a的取值范围是:      (    )