搜题
王老师:19139051760(拨打)
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第1题

Some 40 percent of the hired hands left before they（）their term of service. A.finish B.finished C.would finish D.hav
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第2题

）his leg was badly injured, the boy managed to attend class every day. A.If B.Unless C.Although D.Because
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第3题

往返水准路线高差平均值的正负号是以__的符号为准
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第4题

No fund has been provided to build a system()reading fingerprints more efficiently. A.good at B.keen on C.concerned f
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