单选题
Professor Barkley is not ______ an expert in classical economics but also a world-renowned specialist in international banking laws.
A、
over
B、
only
C、
less
D、
alone
【正确答案】
B
【答案解析】
根据横线前的not和横线后的but, also，应该马上联想到not only... but also...这一结构。故正确答案为(B)only。
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