question: Depleted uranium is also used as a shielding material in some containers used to store and transport radioactive materials. While the metal itself is radioactive, its high density makes it more effective than lead in halting radiation from strong sources such as radium. Other uses of depleted uranium include counterweights for aircraft control surfaces, as ballast for missile re-entry vehicles and as a shielding material. Due to its high density, this material is found in inertial guidance systems and in gyroscopic compasses. Depleted uranium is preferred over similarly dense metals due to its ability to be easily machined and cast as well as its relatively low cost. The main risk of exposure to depleted uranium is chemical poisoning by uranium oxide rather than radioactivity (uranium being only a weak alpha emitter).

The discovery and isolation of radium in uranium ore (pitchblende) by Marie Curie sparked the development of uranium mining to extract the radium, which was used to make glow-in-the-dark paints for clock and aircraft dials. This left a prodigious quantity of uranium as a waste product, since it takes three tonnes of uranium to extract one gram of radium. This waste product was diverted to the glazing industry, making uranium glazes very inexpensive and abundant. Besides the pottery glazes, uranium tile glazes accounted for the bulk of the use, including common bathroom and kitchen tiles which can be produced in green, yellow, mauve, black, blue, red and other colors.
1. What is used to shield radioactive waste?
2. Give an example of radioactive material it might shield
3. Is depleted uranium a metal?
4. Is it radioactive?
5. Is it dense?
6. What else is it used for?
7. Is it expensive?
8. What is the main risk of its use?
9. Who discovered radium?
10. Radium is a part of what ore?
11. What were the original uses of radium?
12. How much uranium is needed to get a gram of radium?
13. How is the waste utilized?
14. Is uranium glaze cheap?
15. What product is the glazed used upon?
16. In which colors?
****
answer: 1. Depleted uranium
2. radium
3. yes
4. yes
5. yes
6. counterweights for aircraft control surfaces
7. no
8. chemical poisoning by uranium oxide
9. Marie Curie
10. uranium ore
11. glow-in-the-dark paints for clock and aircraft dials
12. three tonnes
13. the glazing industry,
14. yes
15. common bathroom and kitchen tiles
16. green, yellow, mauve, black, blue, red and other colors

Originally based on the English alphabet, ASCII encodes 128 specified characters into seven-bit integers as shown by the ASCII chart on the right. The characters encoded are numbers 0 to 9, lowercase letters a to z, uppercase letters A to Z, basic punctuation symbols, control codes that originated with Teletype machines, and a space. For example, lowercase j would become binary 1101010 and decimal 106. ASCII includes definitions for 128 characters: 33 are non-printing control characters (many now obsolete) that affect how text and space are processed and 95 printable characters, including the space (which is considered an invisible graphic:223).

The code itself was patterned so that most control codes were together, and all graphic codes were together, for ease of identification. The first two columns (32 positions) were reserved for control characters.:220, 2368,9) The "space" character had to come before graphics to make sorting easier, so it became position 20hex;:23710 for the same reason, many special signs commonly used as separators were placed before digits. The committee decided it was important to support uppercase 64-character alphabets, and chose to pattern ASCII so it could be reduced easily to a usable 64-character set of graphic codes,:228, 23714 as was done in the DEC SIXBIT code. Lowercase letters were therefore not interleaved with uppercase. To keep options available for lowercase letters and other graphics, the special and numeric codes were arranged before the letters, and the letter A was placed in position 41hex to match the draft of the corresponding British standard.:23818 The digits 09 were arranged so they correspond to values in binary prefixed with 011, making conversion with binary-coded decimal straightforward. What are the answers to this following set of questions: 1. What was this based on?
2. What are they converted to?
3. How many are there?
4. How many print?
5. What is a surprising printable character?
6. What is classified as an invisible picture?
7. What is its number?
8. What are the first two groups saved for?
9. What comes before them?
10. Why?
Answer: 1. the English alphabet
2. seven-bit integers
3. 128
4. 95
5. unknown
6. the space
7. 223
8. control characters
9. space
10. to make sorting easier,

input: Make use of the article to answer the questions. CHAPTER XVIII.

It was a beautiful July afternoon, the air musical with midsummer hum, the flowers basking in the sunshine, the turf cool and green in the shade, and the breeze redolent of indescribable freshness and sweetness compounded of all fragrant odours, the present legacy of a past day's shower. Like the flowers themselves, Albinia was feeling the delicious repose of refreshed nature, as in her pretty pink muslin, her white drapery folded round her, and her bright hair unbonnetted, she sat reclining in a low garden chair, at the door of the conservatory, a little pale, a little weak, but with a sweet happy languor, a soft tender bloom.

There was a step in the conservatory, and before she could turn round, her brother Maurice bent over her, and kissed her.

'Maurice! you have come after all!'

'Yes, the school inspection is put off. How are you?' as he sat down on the grass by her side.

'Oh, quite well! What a delicious afternoon we shall have! Edmund will be at home directly. Mrs. Meadows has absolutely let Gilbert take her to drink tea at the Drurys! Only I am sorry Sophy should miss you, for she was so good about going, because Lucy wanted to do something to her fernery. Of course you are come for Sunday, and the christening?'

'Yes,--that is, to throw myself on Dusautoy's mercy.'

'We will send Mr. Hope to Fairmead,' said Albinia, 'and see whether Winifred can make him speak. We can't spare the Vicar, for he is our godfather, and you must christen the little maiden.' 1. What month was it?
2. What was Albinia wearing?
3. Where was she sitting?
4. Who greeted her?
5. Were they related?
6. Was he her dad?
7. What was he?
8. What was postponed?
9. Was it morning?
10. What was it?
11. Who was coming home soon?
12. Who was he not going to be able to see?
13. What was happening Sunday?
14. Where will Mr Hope be sent?
numbered_answers:
1. July
2. a pretty pink muslin and white drapery
3. in a low garden chair, at the door of the conservatory
4. Maurice
5. Yes
6. No
7. her brother
8. the school inspection
9. No
10. the afternoon
11. Edmund
12. Sophy
13. the christening
14. to Fairmead