单选题：Peterwishesthathe（　　）lawinsteadofliteraturewhenhewasincolleg

题目内容：

Peterwishesthathe（　　）lawinsteadofliteraturewhenhewasincollege． A．couldstudy
B．studied
C．hadstudied
D．wouldstudy

参考答案：

答案解析：

Ofthesun'stotaloutputofradiantenergy,theearthreceives（　　）．

Ofthesun'stotaloutputofradiantenergy,theearthreceives（　　）． A．onetenth B．onemill

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Thepoliceweregivenanorderthatthestolendocumentsmustberecoveredatall（　　）． A．acco

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第（45）题选 A．led B．lead C．leads D．leading

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Itcanbelearnedfromthesecondparagraphthat__________. A．theexistenceofthesymphony

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MancanlandonVenusonlywhen A．thealgaehavedonetheirwork B．theatmospherebecomescoo

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