《放射性物品的分类和名录》根据放射性物品的（）及其对人体健康和环境的潜在危险程度对放射性物品进行分类。
A.颜色
B.特性
C.质量
参考答案：B
—Do you know they got to know each other?
—It was last year they both taught Chinese in Scotland.
A．when it was that; when
B．when was it that; that
C．when was it that; when
D．when it was that; that
在Flash的drewingsetting（绘图设置）对话框中下面哪些功能可以用来设置（）
A.recognizelines（识别线条）
B.recognizeshapes（识别形状）
C.clickaccuracy（单击的准确性）
D.smoothcurves（平滑曲线）
