网考网参考答案：E，答错率：40% 网考网试题解析： To be dubious means to be "skeptical or uncertain," whereas to be certain means to be "sure or absolute." Therefore, certain is most nearly opposite in meaning to dubious.
document.getElementById("warp").style.display="none";
document.getElementById("content").style.display="block";
查看试题解析出处>>
发布评论 查看全部评论