专四

单选题 Thomas Edison seemed to be awkward in his childhood．

A．a great inventor
B．was a great inventor
C．a great inventor who
D．who, as a great inventor

参考答案：A进入在线模考
A。伟大的发明家托马斯·爱迪生在孩童时期似乎很笨。考查主语同位语。本句已有的部分结构很完整，可见空白处为插入语，可以填入定语、状语或同位语，结合选项只有A符合题意，作此处作主语的同位语。

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