input: Make use of the article to answer the questions. The flowering plants (angiosperms), also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants, with about 350,000 species. Like gymnosperms, angiosperms are seed-producing plants; they are distinguished from gymnosperms by characteristics including flowers, endosperm within the seeds, and the production of fruits that contain the seeds. Etymologically, angiosperm means a plant that produces seeds within an enclosure, in other words, a fruiting plant. The term "angiosperm" comes from the Greek composite word (angeion-, "case" or "casing", and sperma, "seed") meaning "enclosed seeds", after the enclosed condition of the seeds.

Fossilized spores suggest that higher plants (embryophytes) have lived on land for at least 475 million years. Early land plants reproduced sexually with flagellated, swimming sperm, like the green algae from which they evolved. An adaptation to terrestrialization was the development of upright meiosporangia for dispersal by spores to new habitats. This feature is lacking in the descendants of their nearest algal relatives, the Charophycean green algae. A later terrestrial adaptation took place with retention of the delicate, avascular sexual stage, the gametophyte, within the tissues of the vascular sporophyte. This occurred by spore germination within sporangia rather than spore release, as in non-seed plants. A current example of how this might have happened can be seen in the precocious spore germination in Selaginella, the spike-moss. The result for the ancestors of angiosperms was enclosing them in a case, the seed. The first seed bearing plants, like the ginkgo, and conifers (such as pines and firs), did not produce flowers. The pollen grains (males) of Ginkgo and cycads produce a pair of flagellated, mobile sperm cells that "swim" down the developing pollen tube to the female and her eggs. 1. What are the most diverse group of land plants?
2. How many different types of them are there?
3. What do they create?
4. What differentiates them from gymnosperms?
5. What edible things do they create?
6. How long have they been on Earth?
7. What other plant-like thing helped them evolve?
8. What is that considered?
9. What is the thing that was created after all the evolution?
10. What did the first ones not create?
11. What are some examples of those?
numbered_answers: 1. flowering plants (angiosperms)
2. 350,000
3. seeds
4. flowers,
5. fruit
6. at least 475 million years
7. green algae
8. swimming sperm
9. the seed
10. flowers
11. the ginkgo, and conifer plants

input: Make use of the article to answer the questions. "Find a job you love, and you'll never work a day in your life." Do you agree with this old saying? Joanne Gordon does. She is the author of Be Happy at work and other books about careers . Gordon believes that about 30% of employees in North America do not like their jobs, and she thinks that is terrible. She wants to help people who do not feel satisfied with their jobs find work that is good for them. Joanne says, "There are no happy jobs, only happy workers." She believes that happy workers share three main characteristics.

First, happy workers enjoy the daily activities of their jobs, and they look forward to the workday. Take Tony Hawk, for example. At age 14, he became a professional skateboarder. Now he is a businessman working on projects related to skateboarding--films and video games, but he still skates every day. He once said, "My youngest son's pre-school was recently asked what their dads do for work. My son said, 'I've never seen my dad do work.'" Tony agrees that his job doesn't look like work. He has found a way to spend each day doing a job he enjoys.

Second, happy workers like the people they work with. Sally Ayote says, "I work with the coolest people in the world." She and her group cook for almost 1,200 people in Antarctica. Most of these people are scientists who are doing research. Sally loves to sit and talk with them. She says, "There is no television here, no radio, so I get to know the scientists and what they're studying." Sally thinks she has a great job, and the best part about it is the people.

Third, happy workers know that their work helps others. Caroline Baron's work helps people who have had to leave their home countries because of war or other dangers. She is a filmmaker who started an organization called FilmAid, which shows movies in refugee camps around the world. Caroline believes that movies can be very helpful in these camps. For one thing, entertaining movies let refugees forget their troubles for a little while. Movies can also teach important subjects like health and safety. For example, in one camp, thousands of refugees saw a movie about how to get clean water. Caroline knows that is helping other people, and this makes her feel proud and happy about her work.

Tony Hawk, Sally Ayote, and Caroline Baron all get great satisfaction from their work. Tony Hawk says, "Find the thing you love. If you are doing what you love, there is much more happiness there than being rich or famous." Joanne Gordon would agree. She encourages people to find something they enjoy doing, find people they like to work with, and find ways to help others. Then they can be proud of what they do, and they will probably be happy at work. 1. Who is an author?
2. What did she write?
3. Is that her only book?
4. What does she believe?
5. How does she feel about that?
6. How many characteristics do happy workers share?
7. What is the first one?
8. The second?
9. The third?
10. What was Tony Hawk when he was young?
11. At what age did he become this?
12. What is he now?
13. Does he have a child?
14. Is it a son or daughter?
15. What did Sally Ayote say?
16. What does she do?
17. For who?
18. How many?
19. Who are those people?
20. What does Caroline Baron do?
numbered_answers:
1. Joanne Gordon
2. Be Happy at work
3. no
4. 30% of Americans do not like their jobs
5. that is terrible.
6. three
7. they look forward to the workday
8. like people they work with
9. know that their work helps others
10. a professional skateboarder
11. 14
12. a businessman
13. yes
14. son
15. "I work with the coolest people in the world."
16. cooks
17. people in Antarctica
18. almost 1,200
19. scientists
20. She is a filmmaker