一个序列中有10000个元素，若只想得到其中前10个最小元素，则最好采用（）方法。
A.快速排序
B.堆排序
C.插入排序
D.归并排序
参考答案：B
They ________ to enter the building by the back door; however, the front door was locked.
A．are supposed
B．aren’t supposed
C．weren’t supposed
D．were supposed
违反规定签发《携带外币出境许可证》的，给予有关责任人（）处分。
