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【单选题】
在临床疗效的研究中,下列哪种试验方案最可靠并且最常用A.
随机对照试验
B.
非随机对照试验
C.
交叉对照试验
D.
历史性对照试验
E.
序贯试验
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反馈参考答案：
举一反三
【单选题】Short Conversation 4. ( )
A.
She should repair the telephone herself
B.
She can turn to Mike for help.
C.
He knows nothing about telephone
D.
He will call the telephone company
【单选题】Conversation One 4.
A.
. It gets dirty.
B.
It gets old.
C.
It is too repetitive
D.
It is mentally tiring
【单选题】Conversation Four
A.
Visit a zoo.
B.
Apply for a job.
C.
Work as a volunteer.
D.
Talk with the manager.
【单选题】(conversation 1) 4.
A.
To have an unfortunate marriage.
B.
To be envious of other people.
C.
To praise a spouse unexpectedly.
D.
To say something negative about a spouse.
【简答题】请完成第十二章课后作业题1, 2,3,A组( 2, 4, 9) 。(手写后,以照片形式上传添加,提交至平台答案处,务必书写工整。)
【简答题】汪小兰第五版有机化学课后作业 第二章 2.2 a, c, e, f, g 2 .9, 2 .16 请将作业写在作业本上,拍照上传图片回答
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