单选题
Only when it is correct in every detail ______.
A、
his model can really run
B、
can his model really run
C、
his model really can run
D、
can really his model run
【正确答案】
B
【答案解析】
[解析] 句意：只有当每一个细节都正确的时候他的模型才能真正地运行。本题考查only位于句首的用法。only+状语位于句首时，后用倒装语序。副词really要放在离它所修饰的动词尽可能近的地方，故选项B为正确答案。
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