What is stated about the competition?
A. It takes place every other year.
B. It was limited to mobile phone designs.
C. It has 10 jurors from around the world.
D. It was sponsored by an electronics company.
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在对既有建筑进行扩建、改建施工时,都有哪些设计要求?
The patient will lose his sight ______ left untreated.
A. since
B. unless
C. after
D. if
材料: 肖老师是五年级的教学老师,为了提高作文批改的反馈效果,他问同学们:“大家喜欢用什么颜色来批改你们的作业?红色代表火焰,热烈,紫色代表富贵、权利,蓝色代表大海、和平,绿色代表希望、生命。”同学们几乎异口同声的说:“我们喜欢绿色!老师,您用绿色给我们批改作业吧!”“好,就这么定了,那么在作业批改中,你们喜不喜欢打X”“不喜欢!”从那以后,肖老师一直坚持用绿色批改作业,且不用’X’,改用’?’和批语,这一绿色批改起了不小的激励作用,同学们非常喜欢他批改的作业,不仅纠错能力得到了加强,学习成绩也有了显著的提高。 问题:(1)请对肖老师的做法做出评析 (2)谈谈教师批改昨夜的基本要求