[填空题]Five out of ten of the world’s largest food companies are aggressively exploring the potential of nanotechnology for better packaging, improved food safety and better nutritional content.
The food industry is moving faster than any other sector to (26) nanotechnology--the manufacture of objects so small that they cannot be seen even with a (27) microscope--and it is estimated that it will be (28) into ＄20 billion (￡ 11 billion) worth of food products by 2010.
But do the public want their food engineered The experience with genetically (29) (GM) food would suggest not. Although no nanotech food products are (30) in Britain, a handful are in the US where there are already demands from lobby groups for "nanohazard" labeling.
There is little controversy over new techniques of (31) nanoscale- sensing devices to food products and packaging, so that the sources of food (32) can be traced back to