Question

【题目】Obama is ____________ the first black president of the USA.

A. known as B. known of

C. known for D. known to

Answer 1

【答案】A

【解析】试题分析：句意：奥巴马作为美国第一位黑人总统而著名。be famous / known for 因为...而出名/著名。for 后接表示特点、特长的名词，表示人或物闻名的原因。be famous/ known as 以……身份出名。as 后一般接表示职业的名词。be famous/ known to 对某人来说是著名的。to 后常接人。所以选A。