默写。
①今夜偏知春气暖,____。(《月夜》刘方平)
②____,斜晖脉脉水悠悠。(《望江南》温庭筠)
③塞下秋来风景异,____。(《渔家傲 秋思》范仲淹)
④足蒸暑土气,____。(《观刈麦》白居易)
⑤李清照《武陵春》中描写词人愁之深重的诗句是:____,____。
⑥马作的卢飞快,____。(《破阵子》辛弃疾)
⑦臣本布衣,躬耕于南阳,____,____。(《出师表》诸葛亮)
⑧____,人迹板桥霜。(《商山早行》
阅读短文, 选出正确答案。
(A)
A picture is on my desk. It is a picture of Mary's family. The man is her father Mr. White. He is a doctor. A woman is behind Mary. She is her mother. She's a teacher. A boy is in the picture, too. He is Mary's brother, Sam. Mary and Sam are in the same school. But they aren't in the same grade. They look like their mother. The White family are English. They come from London.
游标为20分度(测量值可准确到0.05mm)的卡尺示数如图所示,两测脚间狭缝的宽度为____mm.用激光照射该狭缝,在屏上出现衍射条纹.如果减小狭缝的宽度,衍射条纹的宽度将变____.