年級

問題的種類

英文 高中

想請教一下第三題~~~~~

SAL pinnotivno letuten sdt tot 550 sco: Dinamik gyolland het ge The Great Wall of China, one of the greatest wonders of the world, was enlisted in the World Heritage by UNESCO in 1987. Just like a gigantic dragon, the Great Wall 1 up and down across deserts, grasslands, mountains and plateaus stretching approximately 6,700 kilometers from east to west of China. With a history of more than € 70⁰ 2000 years, some of the sections of the great wall are now in ruins. Ye Ry M bliziv linsupon Lots of beautiful legends and stories about the Great Wall 2 following along 015 the construction, and since that time these stories have spread around the country. By all the legends entirely 完全 Meng Jiangnu's story is the most famous and widely spread about the Great Wall. It tells of 4 Meng Jiangnu's bitter weeping made a section TENES of the Great Wall collapse, for her husband died from building the Wall. giggoda .abo Behind the story is the cruel system of hard labor during the reign of Emperor Qin Shihuang. 5 Meng Jiangnu, later generations built a temple, called the Temple of Mengjiangnu, at the foot of the Great Wall in which a statue of her is located. Then, Meng Jiangnu's story will be passed down from generation to generation with the Great Wall. C 1 (A) marches 1 (B) lines (C) winds (D) towers 14 1 C (A) faded away 不樂 B) took place (C) burst out (1) passed down. 傳承 (C) for (A) of 在中 2 (D) within idied mi (D) how (D) In case of # 2 4 (A) what 5 (A) In memory of 1. (B) to ) (B) which ES (B) On behalf of that (C) As a result of 因為 Grants Pass, Oregon, is a fairly small town, it offers much to amuse te most nopular tourist attraction. Visitors JRW 代表 相当地 H 禺 ide

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英文 高中

請問17題的這四個選項分別差在哪!

第10至20題為選組 The five-pointed star drawn with five lines is known today as the pentagram. It is an ancient symbol which has held different meanings. Today, we can see the pentagram 16. as jewelry or designs on clothing. The Sumerians were the first to use the five-pointed star polygon. They wrote about the symbol in records 17. 3000 B.C. In the context of that civilization, the pentagram was a character in a writing system. The Babylonians, a culture with close historical links to Sumer, used the pentagram 18. the planets. Its five points indicated five planets - Mercury, Venus, Mars, Jupiter, and Saturn. In ancient China, the pentagram corresponded to Wu Xing, the five elements that make up the world: metal, wood, fire, earth, and water. In European folklore, it was said to come with magical properties. The 19. of the star affected its significance. With one point facing upward, the pentagram represented "white" magic (good). 20. with two points facing upward, the same symbol stood for "black" magic (evil). Nowadays the symbolism of the pentagram is still commonly used, but it is good to know more of its history than just a fashion statement. 16, (A) wearing 17. (A) originated from 18 (A) in favor of 19. (A) exhibition 20. (A) In reverse C D 18/ CB (B) worn (B) stemmed from (B) in light of (B) attribution (B) In particular (C) that wears (C) dated back to (C) in reference to (C) orientation (C) To some extent (D) to be worn (D) traced back to (D) in proportion to (D) illumination (D) By the same token

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英文 高中

請問B、C如何判斷?我沒有辦法把這兩個選項跟文章串起來,看不出他們有什麼關聯😭

女大考三題型 Unit 8 The Risks of Bio-terrorism In 2001 a number of US government employees and citizens died, after opening 1 letters deliberately contaminated with a deadly disease. 2 The government has responded to the threat by introducing a "Bio-Watch" system, which uses special equipment to detect unusual organisms in the atmosphere. Nevertheless, it can provide an early warning system for major towns and cities, allowing medicine to be rushed to an area under attack. 3 However, the US government is much more worried about the psychological impact, rather than the actual death toll, of a bio-terrorist attack. Any disease effectively released as a bio-weapon in a highly populated zone could cause general panic. 4 As a result of the continuing bio-terror threat, the US government is trying to make its citizens more confident that it can combat this menace. By doing so, it hopes that there will be less widespread panic. Therefore, if a major bio-attack occurs, people can take immediate action to minimize the damage. (A) This was probably the work of a mad scientist, but it signaled to all Americans that bio-terrorism was a clear and present danger. (B) This might freeze normal economic activities in the world's biggest economy center, and thus cause chaos in the global financial system. (C/Infected people can then be treated, and most will survive. DUnfortunately, this technology cannot filter the mail or prevent terrorists releasing diseases in enclosed places. 1. 2. y 3. C 4.

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自然科學 大學

想問3-9的a跟c

Problems 3-1. Explain the difference between *(a) random and systematic error. (b) constant and proportional error. *(c) absolute and relative error. (d) mean and median. *3-2. Suggest two sources of systematic error and two sources of random error in measuring the length of a 3-m table with a 1-m metal rule. 3-3. Name three types of systematic errors. *3-4. Describe at least three systematic errors that might occur while weighing a solid on an analytical balance. *3-5. Describe at least three ways in which a systematic error might occur while using a pipet to transfer a known volume of liquid. 3-6. Describe how systematic method errors may be detected. *3-7. What kind of systematic errors are detected by varying the sample size? 3-8. A method of analysis yields masses of gold that are low by 0.4 mg. Calculate the percent relative error caused by this result if the mass of gold in the sample is (a) 500 mg. (b) 250 mg. V(c) 125 mg. (d) 60 mg. 3-9. The method described in Problem 3-8 is to be used for the analysis of ores that assay about 1.2% gold. What minimum sample mass should be taken if the relative érror resulting from a 0.4-mg loss is not to exceed *(a) -0.1%? (b) -0.4%? (c) -0.8%? (d) - 1.1%? 3-10. The color change of a chemical indicator requires an overtitration of 0.03 mL. Calculate the error if the total volume of titrant is percent relative (a) 50.00 mL. (c) 25.0 mL. 3-11. A loss of 0.4 mg of Zn occurs in the course of an percent relative analysis for that element. Calculate the error due to this loss if the mass of Zn in the sample is *(b) 10.0 mL. (d) 30.0 mL. 190 (c) 188 (d) 4.52 x 103 4.63 x 103 4.53 x 10 ³ √6 *(a) 30 mg. (b) 100 mg. *(c) 300 mg. (d) 500 mg. 3-12. Find the mean and median of each of the following sets of data. Determine the deviation from the mean for each data point within the sets, and find the mean devi- Vation for each set. Use a spreadsheet if it is convenient. *(a) 0.0110 0.0105 (b) 24.53 0.0104 24.68 24.81 24.77 39.61 862 (f) 850 MA 3-13. Challenge Problem: Richards and W the molar mass of lithium and colle data. 24.73 Experiment 1 2 3 4 5 6 194 447 X 10 7 448 X 107 4.58 X 10 (a) Find the mean molar t workers. (b) Find the median molar ma (c) Assuming that the cam molar mass of lithium is the absolute ertor and of the mean value demi Willard. (d) Find in the chemical ues for the molar mus since 1910, and ag a table or spreadshera 1817 given in the a Richards and Willd. Com mass versus year to la of lithium has chang Suggest possible abruptly about 18 ant de (e) The incredibly deals Richards and W that major changes will occur. Disc calculation in pat (f) What factors ha since 1910? (g) How would you mass? 6See Chapter 2 of Applications of Microsoft Excel in Analytical Chemistry, 4th ed., for information about statistical 7T. W. Richards and H. H. Willard, J. Am. Chem. Soc., 1910, 32, 4, DOI: 10.1021/ja01919a002. built-in statistical functions. "Answers are provided at the end of the book for questions and problems marked with an asterisk The I of ₂ or inc rce of able vas error c often in individu ate resul data in rtainties. dimensio andom e analysts The result

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