将点P(-1,-2)沿坐标轴的正方向平移2个单位后得到点Q,则Q点在[ ]
A.第四象限
B.第二象限或第四象限
C.x轴上或y轴上
D.第四象限或x轴上
答案:D
It is not profitable to provide bus services in districts where the population is widely _____.
A.scattered
B.dismissed
C.separated
D.spread
Microsoft Gragh 2000能够导入的文件格式有()。
A..txt
B..xls
C..dat
D..mdb