阅读短文，判断正误。

Dear Joe,

How are you? My sister and I are having our holiday. Yesterday we went to the library. We got there by bus. We read storybooks and had lunch there. The food was delicious. It was cheap, too. We went shopping in the afternoon. I bought a pair of shoes. I was very tired. We are planning to learn skating and do many other things during the holiday. We are sure we'll have a good time.

How about your holiday? Please write to me soon.

Miss you.

Alice

补写出下列名句名篇中的空缺部分。

①自非亭午夜分，____。（郦道元《三峡》）

②____，抱明月而长终。（苏轼《赤壁赋》）

③元嘉草草，封狼居胥，____。（辛弃疾《永遇乐·京口北固亭怀古》）

④____，纫秋兰以为佩。（屈原《离骚》）

⑤____，血色罗裙翻酒污。（白居易《琵琶行》

⑥从今若许闲乘月，____。（陆游《游山西村》）

⑦我腾跃而上，不过数仞而下，____，此亦飞之至也。（庄子《逍遥游》）

⑧____，一夫当关，万夫莫开。（李白《蜀道难》）

2017年4月10日央视报道，继“蛟龙号”载人潜水器后，我国自主研制的4 500 m载人潜水器已经进入总装调试的尾声，潜水器潜入海里4500m深处，受到海水的压强是____ Pa；表面积约为是900 cm²的观察窗受到海水的压力是____ N。(ρ_海水 = 1.03×10³㎏/m³)

若|x|=1，|y|=4，且xy＜0，则x﹣y的值等于（　　）