单选题
He is a very ______character; he is never relaxed with strangers.
A、
self-confident
B、
self-conscious
C、
self-evident
D、
self-serving
【正确答案】
B
【答案解析】
[解析] self-confident自信的；self-conscious忸怩的，难为情的；self-evident不证自明的； self-serving自私的，自私自利的。故选B项。
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