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【单选题】
CSS边框属性中,边框样式(border-style)属性值说法正确的是:A.
none：没有边框，它是默认值
B.
solid：边框为单实线，它是默认值
C.
dashed：边框为虚线，它是默认值
D.
dotted：边框为点线，它是默认值
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【单选题】There is a new problem involved in the popularity of private cars ___________ road conditions need _____________.
A.
when; improving
B.
which; to be improved
C.
where; improving
D.
that; to be improved
【简答题】下列程序段的输出结果是【 】。 include＜iostream.h＞ void main() {int i=10，sum=0； do { sum=+sum+i； i=i-2; }while(i＞＝2)； cout＜＜sum＜＜end1； }
【单选题】There is a new problem involved in the popularity of private cars_______ road conditions need to be improved.
A.
that
B.
which
C.
where
D.
when
【单选题】There is a new problem involved in the popularity of private cars __________ road conditions require __________.
A.
that ... improving
B.
which...to be improved
C.
where ...improving
D.
when...improving
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