Small sailboats can easily turn over in the water ________.
A.if not managed carefullyB.if are not managed carefully
C.unless not managed carefullyD.unless are not managed carefully
A
考查狀語(yǔ)從句的省略。當(dāng)狀語(yǔ)從句的主語(yǔ)和主句的主語(yǔ)一致的時(shí)候,可以把狀語(yǔ)從句的主語(yǔ)和系動(dòng)詞一起省略,本題if的后面省略了they are.句意:如果沒有被小心處理,小小的船很容易就會(huì)翻掉。故A正確。
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