题目

高考是全社会关注的大事, 学校和家庭表现尤为突出。家庭成员对考生从学习到生活给予无微不至的关怀, 结果却给考生带来负面影响。根据图画所描述的内容写一篇文章,并发表自己的观点（夹叙夹议）。 答案：As the College Entrance Examination is drawing near, the situation is getting worse and worse. From the picture, we can see that Li Ming is studying hard. There are many books for him to read and many papers for him to do. How poor he is! At the same time, all his family are also busy working for him. Nowadays, many parents expect too much of their sons or daughters. They hope that their sons or d分别将一种短日植物和一种长日植物置于短光周期中，但在长暗期中间给予一次瞬间光照，结果短日植物不开花，长日植物开花；再将这两种植物置于长光周期中，但在长光期中间插入一次短时黑暗，结果短日植物仍不开花，长日植物开花。以下分析正确的是(  )。A.短日植物和长日植物分别指开花需要短日照条件和长日照条件B.短光周期的长暗期中给予短瞬间光照，长日植物开花，因为光照总时满足其要求C.长光周期的长光期中间插入短时黑暗，短日植物不开花，因为黑暗时长不能满足其要求D.植物对光照和黑暗的反应叫光周期现象