The first men to study the nature of electricity could not imagine that their experiments, carried on because of mere intellectual curiosity, would eventually lead to modern electrical technology, without which we can scarcely () contemporary life.

A. get hold of

B. conceive of

C. get the better of

D. take advantage of

南方的造船技术发达，230年，孙权派人航海到达了________，加强了内地与台湾的联系。