Question:
Read the text and answer the questions.
CHAPTER XXIX

CHECK AGAIN

Though the jongejuffrouw seemed inexpressibly tired and weak, her attitude toward Diogenes lost nothing of its cold aloofness. She was peeping out under the hood of the sledge when he approached it, and at sight of him she immediately drew in her head.

"Will you deign to descend, mejuffrouw," he said with that slight tone of good-humoured mockery in his voice which had the power to irritate her. "Mynheer Ben Isaje, whose hospitality you will enjoy this night, lives some way up this narrow, insalubrious street, and he has bidden me to escort you to his house."

Silently, and with a great show of passive obedience, Gilda made ready to step out of the sledge.

"Come, Maria," she said curtly.

"The road is very slippery, mejuffrouw," he added warningly, "will you not permit me--for your own convenience' sake--to carry you as far as Ben Isaje's door?"

"It would not be for my convenience, sir," she retorted haughtily, "an you are so chivalrously inclined perhaps you would kindly convey my waiting woman thither in your arms."

"At your service, mejuffrouw," he said with imperturbable good temper.

And without more ado, despite her screams and her struggles, he seized Maria round her ample waist and round her struggling knees at the moment that she was stepping out of the sledge in the wake of her mistress.

The lamp outside the hostel at the corner illumined for a moment Gilda's pale, wearied face, and Diogenes saw that she was trying her best to suppress an insistent outburst of laughter.
1. What had Gilda been riding in?
2. Who did she see from in there?
3. Was her attitude towards him warm?
4. How did she feel about his tone of voice?
5. What does Diogenes ask Gilda if he can do?
6. carry her where?
7. Who is Ben Isaje?
8. Why does Diogenes offer to carry Gilda?
9. Does she accept his offer?
10. Does he carry someone else instead?
11. Who?
12. Who was Maria?
13. Does Diogenes complain about this?
14. What did Gilda think about this scene?
15. Does Ben Isaje live on a large street?
16. Did Gilda seem to be full of energy?
17. What did she do when she saw Diogenes from the sledge?
18. Does Gilda know Ben Isaje?
19. What did Maria do when Diogenes lifted her?
20. Did she leave the sledge before or after Gilda?

Numbered answers:
1. a sledge
2. Diogenes
3. no
4. she thought it was irritating
5. to carry her
6. to Ben Isaje's door
7. Gilda's host that night
8. The road is very slippery
9. No
10. Yes
11. Maria
12. Gilda's waiting woman
13. No
14. She found it humorous
15. No
16. No
17. she immediately drew in her head
18. unknown
19. she screamed and struggled
20. after

Question:
Read the text and answer the questions.
Chlorine is a chemical element with symbol Cl and atomic number 17. The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between them. Chlorine is a yellow-green gas at room temperature. It is an extremely reactive element and a strong oxidising agent: among the elements, it has the highest electron affinity and the third-highest electronegativity, behind only oxygen and fluorine.

The most common compound of chlorine, sodium chloride (common salt), has been known since ancient times. Around 1630, chlorine gas was first synthesised in a chemical reaction, but not recognised as a fundamentally important substance. Carl Wilhelm Scheele wrote a description of chlorine gas in 1774, supposing it to be an oxide of a new element. In 1809, chemists suggested that the gas might be a pure element, and this was confirmed by Sir Humphry Davy in 1810, who named it from based on its colour.

Because of its great reactivity, all chlorine in the Earth's crust is in the form of ionic chloride compounds, which includes table salt. It is the second-most abundant halogen (after fluorine) and twenty-first most abundant chemical element in Earth's crust. These crustal deposits are nevertheless dwarfed by the huge reserves of chloride in seawater.
1. What is this about?
2. What is that?
3. What is it represented by?
4. Is there a specific number?
5. What is it?
6. What color is it?
7. What state is it?
8. Is it non-reactive?
9. What does it have the highest of?
10. And ranks at number three as?
11. Where is it usually found?
12. When was it first written about?
13. By whom?
14. What did he say it was?
15. Who later spoke of it?
16. When?
17. Is it found in the ocean?
18. In small quantities?
19. What ranking is it, in common-ness?
20. Do we consume it?

Numbered answers:
1. Chlorine
2. a chemical element
3. symbol Cl
4. yes
5. 17
6. yellow-green
7. gas
8. no
9. electron affinity
10. electronegativity
11. unknown
12. in 1774
13. Carl Wilhelm Scheele
14. an oxide of a new element
15. Sir Humphry Davy
16. 1810
17. yes
18. no
19. unknown
20. yes

Question:
Read the text and answer the questions.
In mathematics, modular arithmetic is a system of arithmetic for integers, where numbers "wrap around" upon reaching a certain valuethe modulus (plural moduli). The modern approach to modular arithmetic was developed by Carl Friedrich Gauss in his book "Disquisitiones Arithmeticae", published in 1801.

A familiar use of modular arithmetic is in the 12-hour clock, in which the day is divided into two 12-hour periods. If the time is 7:00 now, then 8 hours later it will be 3:00. Usual addition would suggest that the later time should be , but this is not the answer because clock time "wraps around" every 12 hours. Because the hour number starts over after it reaches 12, this is arithmetic "modulo" 12. According to the definition below, 12 is congruent not only to 12 itself, but also to 0, so the time called "12:00" could also be called "0:00", since 12 is congruent to 0 modulo 12.

Modular arithmetic can be handled mathematically by introducing a congruence relation on the integers that is compatible with the operations on integers: addition, subtraction, and multiplication. For a positive integer , two numbers and are said to be ", if their difference is an integer multiple of (that is, if there is an integer such that ). This congruence relation is typically considered when and are integers, and is denoted (some authors use instead of ; in this case, if the parentheses are omitted, this generally means that "mod" denotes the modulo operation, that is, that ).
1. How many hours are on the clock?
2. how is the day divided?
3. who published it?
4. When?
5. in what book?
6. Does 12 equal anything else?
7. What?
8. What time is it 8 hours after 7?
9. what wraps around after 12 hours?
10. what is modular arithmetic?
11. in what study?
12. do letters wrap around?
13. then what does
14. What can 12:00 also mean?
15. Does 3:00 equal 18:00?
16. are the intergers incompatiable?
17. Is the integer negative?
18. what does mod mean?
19. Can it be any number?
20. who developed the modern tech?
Numbered answers:
1. 12
2. divided into two 12-hour periods
3. Carl Friedrich Gauss
4. 1801.
5. Disquisitiones Arithmeticae",
6. Yes
7. 0
8. Three
9. clock time
10. In mathematics, modular arithmetic is a system of arithmetic for integers,
11. In mathematics
12. No
13. numbers
14. 0:00
15. unknown
16. no
17. no
18. Modulo operation
19. no
20. Carl Friedrich Gauss