Modern technology has brought us so much convenience--we can now do many things。Throughwe call the Internet．
A.howB.whatC.whichD.that在线课程B
考查名词性从句。句意“当代科技已经给我们带来了很多便利--我们可以通过所谓的因特网来作很多事情。”through后是宾语从句，call sb. sth.，从句的call缺少宾语，用what。故选B。