Nanotechnology is moving closer to our daily life. Researchers from the University of New South Wales, Australia, are developing a coating that may make cleaning bathrooms _____41_____ of a chore. The leading researchers, Professors Rose Amal and Michael Brungs, are hoping to apply a tiny coating of titanium dioxide to keep the toilets clean. Currently titanium dioxide is being used on outdoor items _____42_____ self-cleaning windows.
To further keep the bathroom clean, nanoparticles kill the germs and remove organic compounds. _____43_____ , the coating prevents liquid droplets from forming on the surface. It makes the liquid run off, _____44_____ the toilet in the process.
Exciting as this research project is, at this time it is currently only in development. The researchers _____45_____ it will take about a year before it can be seen on the market. It would certainly be great to have a clean bathroom that would clean itself.
【題組】45. (A)estimate (B)demand (C)criticize (D)summarize