单选题
It was these small differences _____ eventually led the company to be extremely successful today.
A、
that
B、
where
C、
those
D、
what
【正确答案】
A
【答案解析】
解析：本题考查强调句型。强调句的结构是“it is／was+被强调部分+that／who…”。如果被强调部分不是“人”，则连接词只能用that。本句强调的是表“物”的these small differences(小差异)，所以A项that是正确答案。
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