单选题:4个月以后的婴儿对熟悉的人比对不熟悉的人有更多的微笑,这种笑的反应属于( )。 题目分类:职业道德和理论知识 题目类型:单选题 查看权限:VIP 题目内容: 4个月以后的婴儿对熟悉的人比对不熟悉的人有更多的微笑,这种笑的反应属于( )。 A.条件反射性的笑 B.自发性微笑 C.无选择的社会性微笑 D.有选择的社会性微笑 参考答案: 答案解析:
What is the main topic of the passage? What is the main topic of the passage?A.What was learned from Kohoutek B.What 分类:职业道德和理论知识 题型:单选题 查看答案
根据以下资料,回答题: In the past,the Park Service focused on making t 根据以下资料,回答题: In the past,the Park Service focused on making the big scenic parks 分类:职业道德和理论知识 题型:单选题 查看答案
The best title for the text probably is_________. The best title for the text probably is_________. A.Queuing in Japan B.A New Ma 分类:职业道德和理论知识 题型:单选题 查看答案
In the author’s opinion.which of the following is “revenue—r In the author’s opinion.which of the following is “revenue—raising measures”?A.T 分类:职业道德和理论知识 题型:单选题 查看答案