7.                was how he could stand there for as long as two hours without moving a bit. (puzzle)

最讓我困惑的是，他怎么能站在那一動不動，長達兩個小時。

7. What puzzled me most考查主語從句。題干中主句缺少賓語同時從句缺少一個主語。而在名詞性從句中what即充當主句的成分，同時也充當了從句的成分。如果從句中不缺主語、賓語，用that, whetheK是否)或連接副詞。sth. puzzle sb. 某事讓某人困惑。

題目來源：高考丟分題英語 > Unit 4 Astronomy:the science of the stars

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