【单选题】Researchers have made significant technological progress toward increasing the amount of plastic that plants can grow and altering the composition of the plastic to endow it with useful properties, bu...
A.
expose the fragile nature of the foundations on which bioengineering research rests
B.
argue that bioengineering is ultimately infeasible as a means of manufacturing plastic
C.
argue that the advances in organically-based plastic manufacture cannot solve environmental issues
D.
explain the reasons for and objectives of current research on the development of organically-based plastic manufacture
E.
describe the nature of the organic plastic manufacturing process
【简答题】Due to the increasing number of violent acts produced in schools all over the world, more and more parents prefer to have their children educated at home rather than at school. This way they can assur...
【简答题】A.She thinks the price is too high. B.She thinks the price is quite normal. C.She thinks the price could be cheaper. D.She thinks the price is really low.