Not until the early years of the 19th century ________ what heat was.A．man did k
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Not until the early years of the 19th century ________ what heat was.| A．man did know | B．did man knew | | C．didn"t man know | D．did man know |
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答案
| Ｄ |
解析
| 考察倒装句。Not until的句式放在句首时，后面的主句使用部分倒装的形式。故D正确。 |
举一反三
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