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He was very hard wking his research A motivated B dedicated focused D confident

參考答案： B

解析：該句子的意思是“他對(duì)自己的研究非常努力并且非常專(zhuān)注?！边x項(xiàng)B“dedicated”意為“專(zhuān)注的...

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After a sht period of rest adjustment they with the journey to the West A carried out B carried away ? carried f D carried on

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The research result seems to maj US study repted last February A contrast B contact C contradict D contract

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