(单选题)20: （）意味着被测试者的回答不受问题的限制，任何回答都是可以的。
A: 开放式问题
B: 结构型问题
C: 定序性问题
D: 定距性问题
1.(单选题)—Hello,YangLinspeaking. —________________ A.I am Carol. B.This is Ca...
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1.(单选题)—Hello,YangLinspeaking. —________________ A.I am Carol. B.This is Ca...
1.(单选题)— —It'smypleasure． A.Can you fax the document in time B.When can yo...
1.(单选题)— —Theround-tripairfareforapersonisonly$188. A.How much does the air...
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