请用初中化学的相关知识完成下列填空．

根据短文内容, 选择正确答案。

    Doing homework not only can help children master the knowledge they have learned, but also can train their abilities of finishing the work alone, planning the time and doing the duties. But some children don't like to complete the work. Why?

    Some children feel it is very difficult to do their homework, because they can't understand their teacher clearly, and cannot follow their teacher's teaching process (过程). Maybe there is something wrong with their intelligence.

    But some children's intelligence is normal. They are even cleverer, but they don't listen to the teacher carefully. It is hard for them to sit well and pay attention to anything.

    Some children love their teacher and then like the subject. Their interest depends on the teacher who teaches them. So every teacher should make children love you and the subject you teach. So they can do their homework happily.

阅读下面的诗歌，完成小题。

山居秋暝

王维

空山新雨后，天气晚来秋。

明月松间照，清泉石上流。

竹喧归浣女，莲动下渔舟。

随意春芳歇，王孙自可留。

古诗文填空。
①_________________________ ，西北望 ，射天狼 。（苏轼《江城子•密州出猎》）
②__________________，欲语泪先流。（李清照在《武陵春》）
③了却君王天下事，____________________。（辛弃疾《破阵子•为陈同甫赋壮词以寄之》）
④过尽千帆皆不是，斜晖脉脉水悠悠，__________________。（温庭筠《望江南》）
⑤________________，________________。羌管悠悠霜满地，（范仲淹《渔家傲·秋思》）
⑥____________________，五十弦翻塞外声。（辛弃疾《破阵子•为陈同甫赋壮词以寄之》）
⑦足蒸暑土气，              。（白居易《观刈麦》）
⑧《出师表》中表明作者志趣品格的句子是：___________，_____________。

如图，在正方形ABCD中，E、F分别是边AD、CD上的点，AE=ED，DF=$\frac{1}{4}$DC，求证：△ABE∽△DEF．