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英文 高中

為什麼11題made後面是接replied而不是reply?😭😭😭

effect 2. Alcohol has a bad e hat is why drunk driving is promise forbidden 3. Before I tell you what really happened, you mus anyone else. 4. It was all your fault, so you have to take fullr 5. The witness told the police he had heard an a et to tell responsibility argument y. t between the couple that night. 6. This scientific paper shows the closer relationship P between PM2.5 and lung disease. stressful 7. The students were about to take a math exam, which was s 1 for everyone. h. breath 8. Emilia ran four hundred meters and was out of b emotional 9. High school students are often upset by e 1 problems. destroyed 10 The bridge was almost d yed in the earthquake. 蒂娜在網路上製作一支影片,感謝醫師和護士在她發生意外後給予的照顧。 Tina made an online video in appreciation of the doctors and nurses who took care of her after the accident. replied to 12 大家都知道空污的可怕,但似乎沒有解決之道。 . expert at/in We know air pollution is terrible, but there seems to be no solution ta it. 1. 新建的博物館有很多很棒的藝術品,所以一定值得參觀。 There is so much great art in the new museum, so it is surely_worth visiting T Idioms & Phrases 1. pick on 找碴,指責 RBA pick on + sb. Jane felt the manager was picking on her and decided to quit her job. 珍覺得經理在找她麻煩,於是她決定辭職。

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數學 高中

高一下的排列組合 請問12題x-y=4是怎麼來的?

Safari 檔案 編輯 顯示方式 瀏覽記錄 書籤 視窗 輔助說明 9月21日週二下午4:45 a math.ymhs.tyc.edu.tw 己 + 西起始頁面 https://math.ymhs.tyc.edu.tw/masterchen/chenjt99/ScrClass/1082/-... G在數線上有一運動物... @ 信欣茗數學園地 :: 隨意窩 Xuite日誌 4! 二個2二個3,即2,2,3,3:有 6, 2!2! 三個2一個3,即2,2,2,3:有 4! =4,共有4+6+4=14 3! 12.在數線上有一個運動物體從原點出發,在此數線上跳動,每次向正方向或負方向跳1個單位,跳動過程可重複經過任 何一點。若經過6次跳動後運動物體落在點+4處,則此運動物體共有多少種跳動方法? 解:設向正方向跳x次,向負方向跳y次,依題意,得x+y=6且x-y=4 6! 其中x,y為非負整數,解得x=5, y = 1.因此,跳動方法共有 5!1! - 6種 13.某班慶生會原訂的5個節目已排成節目單,開演前再增加2個新節目,若原有5個節目的相對順序保持不變,則增加 2個新節目後的節目單可以有多少種? 解:原有5個節目有6個位置可以放置1個新節目,置入後的6個節目有7個位置可以放置第2個新節目,根據乘法原理,增加2 個新節目後的節目單可以有6x7 = 42 種 14.將A,B,C,D,E,F六個字母排成一列,若A,B都需在C的同一側,則共有多少種排法? 6! 解:(1)先將A, B, C視為3個口,與D, E, F任意排一列,排法有: =120 種 3! (2)因為A,B都須在C的同一側,故3個口中,C必須在最前或最後,填法有2(C 前或後)× 2!(填A與B)=4種 (ABC,BAC, CAB,CBA 四種) 9月 21 : LINE átvĄ

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