【简答题】If you feel at present that you don ’ t have enough friends in your life, one reason may be that you have let yourself become too busy to make time for the relationships you already have. Starting and...
【单选题】Water problems in the future will become more intense and more complex. Our increasing population will tremendously increase urban wastes, primarily sewage. On the other hand, increasing demands for w...
A.
to acquaint the reader with water pollution problems
B.
to alert the reader to the dwindling water supply
C.
to explain industrial uses of water
D.
to demonstrate various measures to solve the pollution problem