請問這兩題怎麼解？ 第一個答案B 第二個答案D

(14.) Mary's uncle doesn't work in her bookstore. He Maybe for two weeks or more. (A) just helped out (C) has just helped out until a new clerk arrives. (B) is just helping out (D) was just helping outen

為什麼[A(org)]=n[An(org)]成立 (第三張圖equation 7.9) 感謝

Experiment 7 Experiment 7 The partition of Organic acid between Water and Organic solvent Objectives Understand the partition of a solute between two immiscible solvents. Introduction A chemical analysis that is performed primarily with the aid of volumetric glassware (e.g., pipets, burets, volumetric flasks) is called a volumetric analysis. For a volumetric analysis procedure, a known quantity or a carefully measured amount of one substance reacts with a to-be-determined amount of another substance with the reaction occurring in aqueous solution. The volumes of all solutions are carefully measured with volumetric glassware. The known amount of the substance for an analysis is generally measured and available in two ways: 1. As a primary standard: An accurate mass (and thus, moles) of a solid substance is measured on a balance, dissolved in water, and then reacted with the substance being analyzed. 2. As a standard solution: A measured number of moles of substance is present in a measured volume of solution - a solution of known concentration, generally expressed as the molar concentration (or molarity) of the substance. A measured volume of the standard solution then reacts with the substance being analyzed. The reaction of the known substance with the substance to be analyzed, occurring in aqueous solution, is generally conducted by a titration procedure. The titration procedure required a buret to dispense a liquid, called the titrant, into a flask containing the analyte. A reaction is complete when stoichiometric amounts of the reacting substances are combined. In a titration this is the stoichiometric point. In this experiment the stoichiometric point for the acid-base titration is detected using a phenolphthalein indicator. Phenolphthalein is colorless in an acidic solution but pink in a basic solution. The point in the titration at which the phenolphthalein changes color is called the endpoint of the indicator. Indicators are selected so that the stoichiometric point in the titration coincides (at approximately the same pH) with the endpoint of the indicator.

問問4.5

People from different countries view time differently. Take Mongolians, for example. They seasonally move from place to place, searching blofresh grass for their animals. Due to the extreme weather and the rough ground, it takes time to move around. The more quickly circumstances change, a2gintheir trips become. So, they adopt flexible schedules instead of strict ones. They often arrange appointments "before noon" or "at night" rather than set a certain time to meet. 3 they arrive within the specified period of time, they are considered "on time." (A) However, this is very different from the practice in Japan, 4 ba person is regarded as being "late" if he or she shows up even one minute past the appointed time. This practice dates back to Japan's industrial revolution. At that time, factory employers demanded that employees time for shifts in order to meet tight production schedules. Apparently, people from different cultures view time in their own ways. Without a doubt, times may change, but culture runs deep. 5 on B1. (A) to 2. (A) what difficult ) (B) for uoy Venom (C) into sirgo2\div (D) with \gnol \ st (C) the more difficult (D) the much difficult (B) how difficult 3. (A) Until bed liv sd \b (B) No matter island (C) In spite of \ weiter (D) As long as A 4. (A) where (B) which (C) what 5. (A) punch in (B) punched in (C) were punching ((D) when)外出 (D) had punched

問問3-5

People from different countries view time differently. Take Mongolians, for example. They fresh grass for their animals. Due to the seasonally move from place to place, searching 1 extreme weather and the rough ground, it takes time to move around. The more quickly circumstances change, 2 their trips become. So, they adopt flexible schedules instead of strict ones. They often arrange appointments "before noon" or "at night" rather than set a certain time to meet. 3 they arrive within the specified period of time, they are considered "on time." 4 5 on a person is regarded as being However, this is very different from the practice in Japan, "late" if he or she shows up even one minute past the appointed time. This practice dates back to Japan's industrial revolution. At that time, factory employers demanded that employees time for shifts in order to meet tight production schedules. Apparently, people from different cultures view time in their own ways. Without a doubt, times may change, but culture runs deep. 1. (A) to (B) for (C) into (D) with 2. (A) what difficult (B) how difficult 3. (A) Until (C) the more difficult (D) the much difficult (B) No matter (B) which (C) In spite of (D) As long as X (C) what (D) when 5. (A) punch in (B) punched in (C) were punching (D) had punched A 4. (A) where

請問這題這樣寫可以嗎～

2. 買家到頭來可能會花費比原來打算的更多,只為了得到想要的商品。 Buyers may spending here money han budgets in order to get 1. 第一題可譯為:end up the products A blind box is a box with sealed packaging that keeps its contents a mystery until it is opened. they want

這兩題！！謝謝💗

( ) 13. We don't count on Gary. We don't believe keep his word. (A) if (B) though (C) until ( ) 14. Today wasn't my day. The bus hit the back he will (D) that my car. Tomorrow, I will have to take a bus to work. (A) to (B) into (C) of (D) with

為什麼不能選C

(©) 3. Hank had to prepare for an important report, so he didn't go to bed at was 12 o'clock last night. (A) after (C) though 本限麵 電話:(B) because (D) until it

第10題為什麼不能選c 第12題為什麼不能選D

because of the heavy rain. until the end of the month B (A) put away Ø 9. I Be (A) buys (B) put off 心 6) take off put on gifts for Tim before I fly back to Taiwan. 2011 (C) have bought 10. The girl you just talked to (A) looked Berg It's i (C) who looked like (A) 11 Mrs. Lin is not sure for dinner or not. (B) will buy (D) was buying my classmate, Judy. (B) look like (D) looks like her husband will come hom (A) whether (B) how (C) that (D) when

請問16.18.

VAL DE ww 17 F CA 1.1 31 1H k DB 第二部分:題組(第16~1題,共26題) (16~19) Anna Hello, Jacob, How was your Chinese New Year? I got some red envelopes from my family. Did you get any? Jacob Yes, I got some, too. I love this festival so much. It is the best New Year 16 CO My parents planned a trip to Japan for our family. We stayed at a beautiful farm for 5 days to celebrate our own Chinese New Year. Anna Wow, it is so special to spend New Year at a farm. What did you do there? Jacob We did lots of things there, like feeding the rabbits, 17 growing vegetables, milking the cows, walking the dogs, and playing with the cats in the house. It was so interesting to stay on the farm. The owner even next summer vacation. 18 me to work there during : AB₂ AB : Jacob We cooked by ourselyes in the owner's kitchen. We had a hot pot with the vegetables 19 and the meat both from the farm. After dinner, we talked with each other until midnight. It was the greatest New Year Eve. Anna: It was so nice! Can I go with you next summer vacation? Please... Jacob Sure! Let's go together. (A) I have (B) I had 17. (A) riding on the horses (C) learning math Anna So cool!!! I like animals very much, and I always want to experience life on farms. What about the New Year Eve? What did you do at that night? Did you eat something special? 18 (A) was asking 19. (A) we picked (B) to ask (B) we brought . (C) asked (C) I am having este atil mail (B) playing computer games (D) watching the movies (C) we hated (D) I have ever had (D) ask we knew

請問17. 直到打開辦公室門才知道有錯誤，不行嗎

(B) A B C D 15. Ian: I think this wallet belongs to you. Cindy: Yes. Where did you it? Ian: Under the bench. (A) buy 56 3800 應用題彙編 (B) find (C) leave 16. Chris is going to open a Japanese restaurant soon. It is his job of high pay and run his own business. (A) brave (B) honest (C) polite 17. Mr. Wu knew something was wrong found some pieces of glass on the floor. (B) if e (A) although (D) open (C) until of him to leave (D) worrying he opened the office door. He (D) when