单项选择---IsDoctorGreen
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问题详情:
单项选择
--- Is Doctor Green ________ ORBIS doctor?
--- No, he is ________ UNICEF volunteer. But he sometimes works with ORBIS.
A. a; an B. an; a C. an; an D. a; a
【回答】
B
知识点:冠词
题型:选择题
问题详情:
单项选择
--- Is Doctor Green ________ ORBIS doctor?
--- No, he is ________ UNICEF volunteer. But he sometimes works with ORBIS.
A. a; an B. an; a C. an; an D. a; a
【回答】
B
知识点:冠词
题型:选择题