41.surprise=startle(it means surprise you slightly), astound(surprise you to a large degree),astonish(the same as astound)

　　42.enthusiasm=zeal (a great enthusiasm), fervency (sincere and enthusiasm)

　　43.quiet=tranquil(calm and peaceful), serene(calm and quiet)

　　44.expensive=exorbitant(it means too expensive that it should be)

　　45.luxurious=lavish(impressive and very expensive), sumptuous(grand and very expensive

　　46.boring=tedious(if you describe something tedious, you mean it is boring and frustrating)

　　47.respect=esteem(if you esteem someone, you respect and admire him/her. )

　　48.worry=fret(if you fret about something, you worry about it)

　　49.cold=chilly(unpleasantly cold), icy(extremely cold)

　　50.hot=boiling(very hot)