书名： 新多益阅读大破解Part５&６
题目：
Internet access in some Asia countries is still ______ through teleph
one modems, but high- speed access is beginnging to make in-roads.
(A) predominant
(B) predominantly
(C) predominating
(D) predominated
疑问：为什么是B(副词)而不是A(形容词) 麻烦高手大大们帮忙解惑~