為什麼是B?

BD 7. The 日期 pot has enough water in it for three cups of tea or coffee (C) boils (A) has boiled (B) boiled (D) boil

請問15題C和D怎麼選？

D 13. We aren't sure she can find a good job this month. (A) that (B) whether (C) what (D) who (C) 4. The cake cake( kept for Sharon was gone which is # (C) that was TILS 15. If you feel thirsty, you can drink the 20bottle. (A) boil (C) boiling (B) that has been (D) was water in the h. B) to boil (( The writer about (D) boiled they talked came from Brazil. (A) whom 17 (B) who & that D) whose

請問第六題，為什麼是用once而不是in?

198) secure gods (A) thevoy 05 The cleaning service promises that all of its employees are (a thorough thoroughly). 晚班員工 06 Evening staff at Bron's Diner may leave for the night (a once, in) the kitchen has been DO cleaned. ((Mo日(日) moil (A) aloota ni nant sortim

請問14. 應該用C還是D👀👉🏻👈🏻

級對照 精□A*42期以上 基 □B 34-37巷 CA 40-419 OB 28-330C0-14M 姓名 熟DA 38-39期礎DB 15-27 A 12 Oscar: 年 班 5 7 does your watch say? Vic: Sorry! I don't have a watch. (A) What time (C) How 13. (B) How much (D) What 文 ly? phone? talk with me since you don't sound good on the (A) How come (C) Why not :✓ 14 Frank: (B) Why (D) How time is left now? Zoe: Five minutes only. (A) When (B) What time (C) How long (D) How much ne 15. Pam: is this jacket? Helen: I think someone must have left it here. (A) Who (B) Whose (D) What = 13 (C) Why 16. Nicole: How are you doing now? Jack: (A) I'm painting. (B) I'm very well, thanks. (C) I'm cooking dinner for my family. (D) It's warm today. g *( ) 17. Do you know I weigh? It's already 80 7 kilograms, which drives me crazy. ② weigh 有...重量 (A) how many (B) how much (C) what (D) when *() 18. Rose: do you do for a living? Carlie: I am a teacher. (A) How SO CON IND (C) who (B) When (C) Where (D) What Hello! May I speak to Andy? is calling, please?

問個 為什麼氣泡會往上浮啊？氣泡的蒸氣壓造成的力不是四面皆同嗎 那它為什麼會往上浮？

三、沸騰 定義:1.當液體在容器中被加熱,通常在容器底部加熱處形成氣泡(bubbles),當溫度 到達某一程度,蒸氣氣泡形成,經由底部上升至液面破裂,此時,我們說此液 體正在沸騰(boiling) 。 2. 液體沸騰的溫度決定於作用其上的壓力,如下圖所示。對於一個氣泡而言,為了 溫度處於能形成和長大,其內之壓力P,至少須等於P,而後才能上升接近液面,不過, 弗腾. 簡直是液體的蒸氣壓,所以我們得結論:當液體的溫度處於其蒸氣壓等於作用於 其液面的外壓時,此液體就可沸騰。壓力1atm(即101.3kPa)時,液體沸騰的 溫度,稱為正常沸點(normal boiling point),例如,水的正常沸點是100℃,而 苯的正常沸點則稍低,80℃。水的正常沸點100℃ 表示水在100℃時之蒸氣壓 為760 torr;酒精的正常沸點 78.4℃表示乙醇在78.4°C時之蒸氣壓為 760 torr; 二乙醚的正常沸點34.6℃表示二乙醚在34.6℃時之蒸氣壓為760 torr。 S P2 每單位面積上的大氣壓力 液面 液面 ·液體的氣泡 蒸氣分子撞 頸蒸 三 擊氣泡界面 意識器容空氣泡- 而向外推壓 a 蔬果 Pi 高炎 (a) ④當P大於P時,液體沸騰,氣泡由底部上升至液面,氣泡的壓力至少要等於 外壓,才能存在。 大氣壓力經液體向氣泡推壓 (b)

請問39題的B、C🙏🏻

30 201 (37-39) Below is some useful information about oil. Oil is called "black gold" for two reasons. * It is black when it comes out of the ground. * It can be sold for a lot of money. How much did a barrel of crude oil cost from 2000 to 2020? prices of a barrel of crude oil in US dollars 110 60 100 90 80 70 Hundreds of millions of years ago, plants and animals died. 15 10 0 10,43 201 28.2 They were kept in mud. 20.29 27.6 36.05 1.63 1.45 27 11.6 14:24 18.44 12.28 1960 1964 1973 1975 1976 1980 1984 1988 1992 1996 1998 2000 2004 2008 2011 2012 2016 2020 Where does crude oil come from? The mud was pushed down and down by other mud and rocks. 94.1 Canada 107.46 What are the disadvantages of using crude oil? Crude oil can't be used again. We may probably run out of it in the near future. Burning crude oil produces CO2, which plays a big part in global warming. Burning crude oil makes the air dirty. 109.45 40.76 That are the top five countries that produced crude oil in 2019? The world produced out 90 million barrels of crude oil a day in 2019. The following picture shows the top oil producing countries in that year and how many barrels of crude oil each duced every day. USA Saudi Arabia Russia China 41.47 The Earth's heat changed the dead plants and animals into oil. 10.81 million 10.5 million 5.23 million 4.86 million 18.61 million barrels per day barrels per day barrels per day barrels per day barrels per day gold barrel crude global produce B Which is a disadvantage of driving to work? (A) It is often faster. (B) It is another way of going to work. (C) It can be hard to find a parking space. (D) It can help you make good use of your time. 38. Which is NOT true about the prices of a barrel of crude oil from 2000 to 2020? (A) It cost the most in 2012. (B.Its price is the lowest in 2000. 6) Its price kept rising from 2003 to 2008. (D) The price in 2020 is lower than that in 2004. 39. What can we learn from the infographic? Oil is as expensive as gold. infographic (B) Most crude oil comes from land, not the sea. (C) In 2019, the USA produced about 20% of the world's crude oil. (D) Crude oil may sometimes make the sea water dirty. 14 請翻頁

為什麼極限不存在（圈起來的部分）

由左、右極限求極限值 直觀地說,必須左、右極限都存在且相等才有極限值。 (x)\_coil (8) 範例 1.設y=f(x)圖形如右,回答下列問題: (1) lim f(x) = x→]- (2) lim f(x) = x→2 2, + limf(x)= 2, lim fa limf(x) = lim f(x) = 4 x-3- , x→1+ lin f(x)=1 lim f(x) = x→3+ limf(x)= 2。 X lim f(x) =__X) • limf(x) = , O 5 EART 3 [a) = g(2 2 3 小小叮嚀 用心感受左、右極限的估

求解！

3 12 設不等式 ax2-2ax+2a-3<0之解為-1<x<3,試求實數a= ax-2ax+ (20-3) <0 (X+1)(x-3) <0 ⇒x=2x-3 <0 447 ** 3 36-173 OIL 47 h X<- x < -2 or Mir

這題要如何用它給的提示解？ 為什麼我把全部列出來答案卻多那麼多？

位為 6. 以汽笛的長音、短音來做信號,長音一次需2秒,短音一次需1秒,每音之間有1 秒的間隔。若每一組信號前後的總長度為 15 秒,則能做成 種信號。 信號 10/0/0/0/0/0/0/ CASION 1 ²/²/²/² = 7 ?? 61 14 AN AD U = 2! 5!2! = X5 =20 0/0 0% onom 6 3!3! = 6! MOTOIL 3 300 DU U 4!2! r 事 原來如此 設長音x個,短音y個,則有 (x+y-1)個間隔。這是歷史 悠久的聯考題

圈起來那個部分（圖一）為什麼啊 是這樣嗎？（圖二）

範例 導線旋轉所生的電動勢 6 有一以O為圓心､L為半徑的 OMN 扇形電路置於均勻磁 場B中如右圖所示,磁場垂直穿入紙面,半徑 OM 之間 20 有電阻R,電路中其他電阻可忽略不計。OM與MP弧固 定不動,而長度為 L 的 ON 以O為軸心作順時針往P方 向旋轉,角速率為①,則電路中電流為下列何者? @BL2 ①BL² o BL² 2R R 2R/ (A) 【答】 T= V= (B) R 2 二 M (C) 解題關鍵▶利用動生電動勢:=(vxB) (=vBC,其中7L00 E VBL HASUE R BLW 2 R ①BL R (D) 點,均勻限 ETTEN MOR (E) @o²BL² 2 R² DO 美宝固縣(日光 ABA HUAy VI 3-3 法拉第電磁感應定律 135 。 (C) OILIGES AST ab s M 相關題型:單元練習 7. MIN 為平均(切割)速率。 x AC 時則琳一現bods 套間空,示调 x X x 【102指考】 答對率 37% 全网。 x X P (0) A8 (8) O(A) 杂曲歌,更是採hvBC)、