Speaking topics in text
Bioluminescence
Bioluminescence occurs when organisms convert chemical energy into visible light. This happens when a chemical reaction involving oxygen and two other molecules takes place. During this reaction, light of varying colors may be emitted. The great majority of organisms that use bio-luminescence are found deep in the oceans depths. This ability to produce light serves a variety of functions. Organisms may use it to do anything from escape their predators to find food.
Online speaking recording
Votes
This speaking topic by users
| Post dates | Users | rates | Contents |
|---|---|---|---|
| 2016-03-03 | saramhl | 90.00 | Check this speaking |
| 2014-04-14 | Ekhlass1980 | 80.00 | Check this speaking |
| 2014-04-14 | Ekhlass1980 | 80.00 | Check this speaking |
| 2013-11-08 | Pinky123 | 85.00 | Check this speaking |
Speaking category
Speakings by user Ekhlass1980
:
- q4 70
- 22. Some people give money as gifts to friends. Others try to give a specific kind ofpresent. Which kind of gift do you prefer giving to a friend? 80
- 12. Which kind of job would you prefer: a job that is uninteresting but has a high salary,or a job you really enjoy with a moderate salary? 70
- 23. To find out about a course subject, would you prefer to go and ask a teacher about it,or talk to a student who has already taken the subject? 80
- talk about a place you enjoyed going or visiting when you were a child 80
23 in 30
Not good for last 15 seconds.