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问题
填空题
56-10→( )+8→( )+9→( )-7→( )-50→( )
答案
46;54;63;56;6
选择题
─I think running is an easy way to keep healthy.
─_____, but Bill doesn't think so.
A. I disagree
B. I agree
C. I'm afraid not
D. I don't think so
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单项选择题
阿片受体拮抗药
A.喷他佐辛
B.纳洛酮
C.哌替啶
D.可乐定
E.二氢埃托啡
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