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【多选题】
我国规定的国内一日游游客的条件是( )。A.
离开惯常环境10千米以上
B.
出游时间超过6小时,不足24小时
C.
离开惯常环境5千米以上
D.
出游时间超过10小时,不足24小时
E.
未在境内其他地方旅游住宿设施中过夜
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反馈参考答案：
举一反三
【单选题】Who volunteered to clean up the oil
A.
Business people, storekeepers and students
B.
Storekeepers, reporters and business people
C.
Farmers, scientists and teachers
【简答题】innovation
【单选题】Who volunteered to clean up the oil?
A.
Businessmen, storekeepers, students and others.
B.
Storekeepers, reporters, businessmen, and others.
C.
Farmers, scientists, teachers and others.
D.
Scientists, technicians, businessmen and others.
【单选题】— The floor is clean and dry now. Who _______? — Sorry, I don’t know.
A.
mopped it up
B.
has mopped it up
C.
has mopped up it
D.
mopped up it
【单选题】Your bedroom is very dirty. You must _____. [ ]
A.
clean up it
B.
clean it up
C.
clean them up
D.
clean up them
【单选题】已知某单能射线在钢中的半价层为3mm,则该射线在钢中的吸收系数为( )。
A.
0.231cm
B.
2.31cm-1
C.
2.079cm
D.
0.00231mm-1
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