Problem: People have talked about whether aliens are real or not for thousands of years.Some ancient drawings over 50,000 years ago are thought to be the first pictures of spacecrafts.Alien spacecrafts are often called flying saucers .The first person to use this name was an Amerlean,Kenneth Arnold.On 24th June,1947,he was flying a small plane in Washington State in the USA when he saw something strange."I was looking out of the window,"Arnold said,"when I saw nine saucer-like things in front of me." Two other Americans,Charles Hickson and Calvin Parker,said that aliens took them into a flying saucer! They were fishing on the Mississippi River in the USA on the night of 11th October,l973.It was a dark night.The two men were sitting in their fishing boat when they saw a bright light.It was hanging in the air over the water and it looked like a flying saucer and brought Hickson and Parker into their spacecraft.In the spacecraft the aliens looked at the two men very carefully and then took them back to their boat."The aliens were in a pale colour and had very small eyes." Hiekson said."But they didn't hurt us." In l983,Pioneer 10,an American spacecraft,went into space.On the outside of the spacecraft are 13 pictures of men and women,and a map of space.If aliens find Pioneer 10,they will know how to get to the Earth!
1. What is the story about?
2. What about them?
3. How long have people thought about that?
4. Has anyone seen an alien?
5. What do they look like?
6. Who saw them?
7. Did they hurt them?
8. When did people first talk about aliens?
9. What did they write about?
10. What of?
11. Has anyone more recently seen a spacecraft?
12. Who?
13. What did they see?
14. Where were they?
15. What happened next?
16. Has anyone else seen anything?
17. Who?
18. What did he see?
19. Have we ever tried communicating with aliens?
20. Where was Arnold when he saw the nice saucers?
Answer: 1. aliens
2. whether they are real or not
3. thousands of years
4. yes
5. pale colour and small eyes
6. Hickson and Parke
7. no us
8. over 50,000 years ago
9. .they made drawings
10. spacecrafts
11. yes
12. Hickson and Parker
13. a bright light
14. on the Mississippi River
15. took them into their spacecraft.
16. yes
17. Kenneth Arnold.
18. nine saucer-like thing
19. no
20. flying a plane in Washington

Problem: Index Medicus (IM) is a curated subset of MEDLINE, which is a bibliographic database of life science and biomedical science information, principally scientific journal articles. From 1879 to 2004, "Index Medicus" was a comprehensive bibliographic index of such articles in the form of a print index or (in later years) its onscreen equivalent. It was begun by John Shaw Billings, head of the Library of the Surgeon General's Office, United States Army. This library later evolved into the United States National Library of Medicine (NLM). In the 1960s, the NLM began the indexing work by creating MEDLARS, a bibliographic database, which became MEDLINE. "Index Medicus" thus became the print presentation of the MEDLINE database's content, which users accessed usually by visiting a library which subscribed to "Index Medicus" (for example, a university scientist at the university library). It continued in this role through the 1980s and 1990s, while various electronic presentations of MEDLINE's content also evolved, first with proprietary online services (accessed mostly at libraries) and later with CD-ROMs, then with Entrez and PubMed. As users gradually migrated from print to online use, "Index Medicus" print subscriptions dwindled. During the 1990s, the dissemination of home internet connections, the launch of the Web and web browsers, and the launch of PubMed greatly accelerated the shift of online access to MEDLINE from something one did at the library to something one did anywhere. This dissemination, along with the superior usability of search compared with use of a print index in serving the user's purpose (which is to distill relevant subsets of information from a vast superset), caused the use of MEDLINE's print output, "Index Medicus", to drop precipitously. In 2004, print publication ceased. Today, "Index Medicus" and "Abridged Index Medicus" still exist conceptually as content curation services that curate MEDLINE content into search subsets or database views (in other words, subsets of MEDLINE records from some journals but not others). This filters search results with a view toward excluding poor-quality articles (such as by excluding junk journals), which is often helpful depending on the needs of the user.
1. What does IM stand for?
2. What is it?
3. When did it begin?
4. When did it end?
5. What was a variable of its decline?
6. Did the web help with the decline?
7. Can IM still be used?
8. Does it encourage badly written articles?
9. What does it exclude?
10. Who started it?
11. Was he in the military?
12. What branch?
13. What was he the leader of?
14. Which later became what?
15. What did it start doing in the sixties?
16. How did people generally access it?
17. How long was it used in this way?
18. What is a new way it was accessed after this time period?
19. Could it be accessed through DVDs or CDs?
20. What came after the ROM's?
Answer:
1. Index Medicus.
2. A bibliographic database, principally scientific journal articles.
3. 1879
4. 2004.
5. Users gradually migrated from print to online use,
6. Yes.
7. Yes.
8. No.
9. Poor-quality articles.
10. John Shaw Billings.
11. Yes.
12. United States Army.
13. Head of the Library of the Surgeon General's Office.
14. The United States National Library of Medicine.
15. Began the indexing work by creating MEDLARS, a bibliographic database, which became MEDLINE.
16. Bby visiting a library which subscribed to IM.
17. Through the 1980s and 1990s.
18. Various electronic presentations.
19. Yes.
20. Entrez and PubMed.