下列几组数据能作为直角三角形的三边长的是( )
A:2,3,4
B:5,11,13
C:4,6,9
D:9,41,40
结合上述材料,请你参与并完成任务:
–There is little ________ at home. Let's go and buy some apples, pears and strawberries.–OK, we'll go to the supermarket in a minute.
实验步骤: