pessimistic (adj)
/ˌpes.ɪˈmɪs.tɪk/

thinking that the worst thing will happen in every situation

optimistic (adj)
 /ˌɒp.tɪˈmɪs.tɪk/ 

hopeful about the future and tends to expect thatgood things will happen

terrorist (n)
 /ˈter.ə.rɪst/

someone who uses violence in order to achieve political aims

labour-saving (adj)
/ˈleɪ.bəˌseɪ.vɪŋ/

describes a device or method that saves a lot of effort and time

micro-technology (n)
 /ˈmaɪ.krəʊ tekˈnɒl.ə.dʒi/

technology that uses microelectronics

telecommunications (n)
/ˌtel.ɪ.kəˌmjuː.nɪˈkeɪ.ʃənz/

the science and technology of sending information by telephone, radio, ortelevision

unexpected (adj)
 /ˌʌn.ɪks'pek.tɪd/

surprising

contribute to (phrase)
 /kənˈtrɪb.juːt tʊ/

to give money, goods, or your time and effort in order to achieve something

incredible (adj)
/ɪnˈkred.ɪ.bl̩/

surprising, or difficult to believe

centenarian (n)
 /ˌsen.tiˈneə.ri.ən/ 

someone who is 100 years old or older

eternal (adj)
/ɪ:ˈtɜː.nəl/ 

continuing for ever or for a very long time

eradicated (adj)
 /ɪˈræd.ɪ.keɪtid/

to get rid of something completely, especially something bad

wipe out (phrase)
/waɪp aʊt/

to destroy something completely

space-shuttle (n)
/speɪsˈʃʌt.l̩/

a vehicle that travels into space and back to Earth and lands like a plane

depression (n)
/dɪˈpreʃ.ən/

a period of time when there is a lot of unemployment and poverty because there is verylittle economic activity

domestic chore (phrase)
 /dəˈmes.tɪk tʃɔːr/

works in your home that is done regularly

life expectancy (n)
 /laɪfɪkˈspek.tən.si/

the length of time that someone is likely to live

curable (adj)
/ˈkjʊə.rə.bl̩/ 

be able to stop someone from being affected by an illness

fatal disease (n)
/ˈfeɪ.təl dɪˈziːz/

very serious negative illness caused by infection

fit (v)
 /fɪt/

to add a piece of equipment to something else