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【简答题】
已知方程|x-1|+|x-2|+|x-10|+|x-11|=m无解，则实数m的取值范围是______．
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【简答题】安全防范的三个基本要素是
【简答题】安全防范的三个基本要素是: 、 与 。
【单选题】Brussels, the capital city of Belgium, is _____ home to the European Union, _____ organization of European nations. [ ]
A.
the; an
B.
a; an
C.
不填; an
D.
不填; the
【单选题】Brussels, the capital of Belgium, is ______ home to the European Union, ______ organization of European nations.
A.
the; an
B.
不填; an
C.
a; an
D.
不填; the
【单选题】Which of the following is NOT true about the European Union?
A.
It eliminated the cost of cross-border transactions.
B.
It realized better economies of scale.
C.
It made the European companies more efficient.
D.
It realized political union in Europe.
【单选题】— Do you know what EU stands for, Tommy? — Sure. It stands for the European Union, _____ European political and economic organization that encourages trade and friendship between _____ countries that ...
A.
a, the
B.
an, the
C.
a; the
D.
an, /
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