53、Firms that use computers have found that the number of staff ( ) is needed for quality control can be substantially reduced.

27.Twelve pupils were killed and five ( )injured after gunmen attacked the school during lunchtime.

26.He closed his eyes and held the two versions of La Mappa to his mind’s ( )to analyze their differences.

25.The party’s reduced vote in the general election was ( )of lack of support for its policies.

24.Despite concern about the disappearance of the album in popular music, 2014 delivered a great crop of album( )

23.The daisy-like flowers of chamomile have been used for centuries to ( )anxiety and insomnia.

22.If you intend to melt the snow for drinking water, you can ( )extra purity by running it through a coffee filter.

21.Some narratives seem more like plays, heavy with dialogue by which writers allow their ( )to reveal themselves.

20.You must fire ( ) incompetent assistant of yours.

19.At that moment, with the crowd watching me, I was not afraid in the ordinary sense, as I ( ) if I ( ) alone.

18.Some Martian rock structures look strikingly like structures on Earth that are known( )by microbes.