想請問各位化學高手，這個符號是代表什麼？高一化學課好像沒有特別提到。

下列物質何者為 L-胺基酸? (B) H2N-CH-CH3 (C) ( (A) H3C-CH-OH 1 NH2 COOH NH2 CH2-COOH (D) HOẶC COOH (E) --CH2-CH-COOH o NH )已知有五種界面活性劑,結構如下所示,則下列敘述哪些正確? no- +

請問it is⋯that 的句型可以用來強調動詞嗎？例如It is having a meal that I want to do now.

想問第三題，我知道（A)(D)是錯的。那為什麼不能選（B）呢？ 謝謝🙏

2. 第1回 詳解 PI~P2 (2 1625 sorte og av ym ror, sa besim or brons leven vor der 綜合測驗 Discobar People like Jimmy for the dreamlike fantasy world he creates, a land of joy and sorrow. ale nigged brilliw sayod to aborto O camminatamas Jimmy, a fine art major, had already become a successful artist by the early 1990s. However, in the spring of 1991) Jimmy Panther with leukemia He wondered what messages Heaven Cogues Ordonare was trying to convey to him. He cried often. His heart CORO OO 000130021310 Om with each passing heart grew mor day. (Even the sight of pigeons resting outside his sickroom could make him start to weep A 10 nous on 0902 uncontrollably.) Because of this severe blow, Jimmy began to view the world in a completely amesema anca par drawing we can different light. He suddenly realized that drawing was not only a means of making a living, but also a channel @ ) CV Jimmy's picture books seem to more for adult readers than for children. They vividly sad and joyful feelings triggered by trivial matters. [ 2019 才反 ren. They express 5. the crisis he experienced 1500 hoy porn in his early thirties, Jimmy might not have had new insight into life and art and enjoyed such a USOM great deal of success. nit tiwa Witboog bed B 1. (A) is diagnosed znosed (B) was a (B) was diagnosed on C) has diagnosed (D) had diagnosed V 2. (A) aggressive thL;E 64B) positive (C) effective 1761 (D) sensitive any no C to 3. (A) which (©) through which channel to which anco 3 x @(A) intend (B) be intended (C) intending (D) be intending be intendo (B) Were it not for U C (C) But that (D) Had it not been forzej 3. he could express Hario Omo Summer 4. (B) that boroup al vision 980 D 5. (A) Withmos We like to read short stories because we like to know people. We like to watch them

求解第一和第九題 謝謝🙂

6. (D) but (1) however (H) eager 第二篇 (B) holder (C) determination (E) greatest (A) despite (G) considered (I) race (F) rose Derek Redmond, who was the 400-meter record 1. in UK, made a comeback at the 1992 2. Olympic Games. At that time, many him the one who was most likely to win the 400-meter 3. . After missing the 1988 Seoul Olympics, he was 4. to win the championship this time. 5. he didn't know that he would meet with misfortune. In the middle of the race, he tore his hamstring and fell. Because of that incident, he lost not only the race 6. also his dream of winning a gold medal. However, 7. the fact that he was in great pain, he 8. to his feet and continued the race. With 9. courage, and his father's assistance, Derek finally crossed the finish line as 65,000 people watched one of the 10. moments in Olympic history. 全新試題 2. 3. 4. 5. 1. G A 6. 7. 8. 9. 10. E V. 篇章結構 (A) Unfortunately, something unexpected happened during the race. (B) Upon seeing this, Derek's father, Jim, couldn't help but rush to his son's side to support him (c) One of the moot

求解 謝謝！

10 Lesson One 4. No one could stop the two from finishing the race. As they slowly approached the finish line, the 65,000 spectators in the stadium cheered loudly for them. Derek didn't win the gold medal, but he still became a champion in everyone's mind. After the race, Derek expressed his thoughts on why he had insisted on finishing the race. “It doesn't matter how hard it is, but you must finish what you started." Derek Redmond's persistence made him a true legend. 5. 全新試題 1. 2. 3. 4. 5. VI. 素養閱讀 According to historical records, the origin of the Olympic Games dates back to 776 BC in Olymp Greece. The first modern Olympics were held in Athens, Greece, in 1896. The symbol of the Olympics, namely the Olympic Rings, consists of five interconnected rin each a different color: blue, yellow, black, green, and red. These rings represent unity among the f continents: Africa, the Americas, Asia, Europe, and Oceania. The Olympic flag was adopted in 19 and first presented at the Summer Olympic Games in Antwerp, Belgium in 1920. The motto of the Olympic spirit is “Citius, Altius, Fortius," which is a Latin expression mear " What is important in the Olympic Games is not winning but tal

幫忙一下感謝

1. 求下列極限值 。 3 同 (a) b) |iIl lim 4一 【 1 還 國點3 (0 jim2-和-3 JS 點2 2 判斷下列函數的所有漸近線(Asymptote), 點出/G)與及y軸之交點,。」並給 出 /G)之圖形。 說02 11 _3% 14 (a) 虞2 (b) /(x) = 讓 名 ) 若/G0 - =瑟科8 , 下列對/G)之敘述那些是對的 0y3放央M 品9 進線 @z=3為其垂直漸進線 @ (xy)與x軸有 2 個交點 @7ZAG與 點 但文下 @ /G)與y/=1有1個交點

不確定有沒有寫錯 請幫我看看 謝謝🥺

共 洲 AN 區加圖 進階卷 Lesson5 The Life ofa Plastic Bag 人忱廬EE人 請坦重著作槿、勿所自勳鋪 ! L工 文意字彙與詞類變化 : 20% Co ! A€/ 1. The government encourages people to buy air conditioners With “electrlcity-saving ]abels because they ce eless electricity- m. ! AAMIW 2. Trying new dishes while traveling in forelgn countries doesn't do you any h In fact, it will be a special experience- es which can increase your risk of 2 嘻 人W( 多2. Cooking smoke contains some dangerous s getting Iung cancer Co AA AiIeWNC@The professor said that he would be at his office all day, so students could talk to INIENdtUAEITC上Re ]assmates on the first day of school. 0O Yheisa 人 bv 心 站 5. Little Johnny talked to all hisc: Very outgoing boy. 6. When the dog saw its owner taking out some pet snacks, 1 Tan up to him and wagged its taile y. RSS etdC TwW1 凡RS ling used materials can help to prevent the waste of our natural resources. (surround), so they wontbe caught easily. (poison). Eating them 人 妃 Ar %uiw 和你 Most insects blend in with their 了zoovM229 Experts warn that wild mushrooms are usually could cause discomfort or even death. 2 凡人 10. It took the company three years to develop its ne (produce), which soon became ahuge success. H 文法選擇 : 10% ( 說 II. The old man sat on the sidewalk, (A) begging (B) begged (C) beg (0 12. AllofJimmy”s old comic books in the closet were found and thrown for money from passersby- (D) begs IS全加 ( his mother. (A) onto; with (B) in; by (C) onto; by (D) inside; with (肯 ) 13. The weather ___hot. Ithink we?ll need to turn on the air conditioner very soon. (A) 1s going (B) 1s getting (0) is making (D) 1s having (說 ) 14. The baby didn't stop crying hs mother brought him the toy he wanted. (A) as soon as (B) as long as (C) since (D)until ( ) 15. Jenny practices hard every day and hopes someday she will be selected for the national swimming team. (A) when (B) that (C) which (D)how

［ 高三數學微分］ 圖一為題目，圖二、三為詳解 看不懂（圖二）下方的三個算式 為何可以這樣換算？ 先謝大神

店 (到劑伯人 2一0 毅

第5小題 limf(x)^2是先平方再極限還是先極限再平方或是兩個相等 照我的算式應該是要相等 不然重新解釋也可以!

|唐 和 喲Bi 設/() 為一定義在非零實數上的實數值函數。 已知極限Jim 7(z)一 有人 出正確的選項。 1 2-Y (0 剖# 和 (02) lim nm7()瑟 1 說 同 吃殉 全0 品 Q 中/G)間在 (品7 存在 人 議 必 7)一 同 有 720 7 2 7) 的 4 還 JM) : 因 中 補 29 2 小2 蝦 品

請問第二題為什麼x從右邊趨近3時 上式的值會趨向無限大

求下列各和極限: 同 歡 了 32 全 二 衛 。 (1)因為分子與分母在>二 一3 的函數值均為 0, 所以分子與分母都有 # 的因式,,於是, 當當3 時, 們林以選原分式變形如下: 過 古人號, 辣 xz-3 一一一 故 效一5十6 Jim 守馬(二2 評3誠2店IE 2一3文一? 畫條三 人 訴問為分說在 x3 的函數值為 0, 但分子在 x二3 的函數值不為 和>一3 不是分子與分邱的共同因式、利用除法原理,將原分 有形名和 闌 一一一 机 二文在+二3歡近的信) 可以得知: 當>x從右邊趨近3 時, 上 全全, 而當從左邊趨:) ; 近3 時, 上式# 和想近3時, 上式的人會趨向奶 0 2 說 2