What the Net seems to be doing is chipping away at my capacity for concentration and contemplation.
A.
The Net acts as a great assistant in enhancing my capacity for concentration and thinking.
B.
My capacity for concentration and thinking appears to be dwindling(减少) due to the use of the Net.
C.
Whether one is able to concentrate and do critical thinking is largely dependent upon the Net.
D.
I am focusing my attention on the Net and contemplating it.