1 The scientists have presented a detailed analysis of the results.
2 They have brought in a food analyst to help in the research.
3 All process materials are tested using highly developed analytical techniques.
4 The researchers have corne up with an innovative idea for the use of recycled plastics.
5 Charles Dyson is the inventor of a vacuum cleaner which works on a new principle
6 The advent of the ballpoint pen was a wonderful invention .
7 They employ a large tearn of software developers .
Объяснение:
1-g
2-f
3-c
4-d
5-b
6-e
7-a