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【单选题】
下列物理量中都是矢量的为A.
质量、重力
B.
力、速度
C.
长度、速度
D.
时间、密度
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举一反三
【简答题】The author's attitude toward the influence of advertisement on people's habits is（ ） [A] indifferent [B] negative [C] positive [D] biased
【单选题】the author's attitude toward the influence of advertisement on people's habits is_________.
A.
indifferent
B.
negative
C.
positive
D.
biased
【单选题】It can be concluded from the passage that______.
A.
people's behavior. accounts for attitude
B.
people's living habit is easy to change
C.
people's attitude towards punctuality is identical
D.
cultural difference can cause difference in attitude
【单选题】已知关系S(S#,SN,AGE,SEX),SC(C#,S#,GRADE),C(C#,CN,TEACHER)。若要检索学生姓名及其选修课程的课程号和成绩,正确的SELECT语句是:
A.
SELECT S.SN,SC.C#,SC.GRADE FROM S,SC WHERE S.S#=SC.S#
B.
SELECT S.SN,S
【单选题】The author's attitude toward the influence of advertisement on people's habits is______.
A.
indifferent
B.
negative
C.
positive
D.
biased
【单选题】已知关系S(S#,SN,AGE,SEX),SC(C#,S#,GRADE),C(C#,CN,TEACHER)。若要检索学生姓名及其选修课程的课程号和成绩，正确的SELECT语句是_________。
A.
SELECT S.SN,SC.C#,SC.GRADE FROM SC WHERE S.S#=SC.GRADE
B.
SELECT S.SN,SC.C#,SC.GRADE FROM S WHERE S.S#=SC.S#
C.
SELECT S.SN,SC.C#,SC.GRADE FROM S.SC
D.
SELECT S.SN,SC.C#,SC.GRADE FROM S,SC WHERE S.S#=SC.S#
【单选题】What is people's attitude toward cosmetic surgery?
A.
They think it is frightening
B.
They cannot accept it
C.
People's attitude has changed over time
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