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[主观题]
His services have been ______by his employers; they have not properly rewarded him.A.cance
His services have been ______by his employers; they have not properly rewarded him.
A.canceled
B.withdrawn
C.overlooked
D.deleted
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His services have been ______by his employers; they have not properly rewarded him.
A.canceled
B.withdrawn
C.overlooked
D.deleted
第1题
流行性感冒是由______所引起的急性呼吸道传染病。
A.细菌
B.流感病毒
C.霉菌
D.以上都是
第4题
传染性喉气管炎是由()引起的鸡的一种急性呼吸道传染病。
A.细菌
B.真菌
C.病毒
D.支原体
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