单选题：UntilthendidIrealizethattheirmarriagehad__________becausethe

题目内容：

UntilthendidIrealizethattheirmarriagehad__________becausetheyhadlittleincommon. A．putoff
B．givenup
C．brokenup
D．calledoff

参考答案：

答案解析：

A1,000kilometerrailwaywillbe__________asamajormeansoftranspo

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____________,itisquiteeasytodrillaholeinitwithlaser. A．Asdiamondishard B．Althou

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