摘要：6．When it high technology, he is completely at a loss． A．refers to comes to C．happens to D．speaks to
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When it _______ high technology, he is completely at a loss．
A．refers
to 
comes to C．happens
to D．speaks to
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When it _________ high technology, he is completely at a loss.
| A．refers to | B．comes to | C．happens to | D．speaks to |