题目

阅读理解（10分）I have a picture of my school. There is a new building in the middle of the picture. There are many flowers and trees near the building. There’re twelve classrooms in it. There’re twenty-four desks for the students and one desk for the teacher in every classroom. Beside the building, there is a big playground. There are some boys and girls in it. They’re playing happily. There are some houses next to the building. They are our library and reading rooms. How many windows are there in every reading room? Four. So it’s bright. Now some students are reading. We all l当前，食品安全问题成为社会的热点．下列做法对人体无害的是（ ）A．用硫磺薰蒸生姜增白B．用碳酸氢钠发酵面团蒸馒头C．用甲醛溶液浸泡血旺保鲜D．用亚硝酸钠卤制猪蹄