Bob: What can you do, Susan?
Susan: I can____
Bob: Can you ____?
Susan: No, I can't.
Bob: No problem. I can ____you.
Susan: Great! What can you do?
Bob: I can ____, but I can't ____.my clothes.
人的双眼皮是显性,单眼皮是隐性,现有一对夫妇,都是单眼皮,他们所生的子女应该
如图,有一张直角三角形纸片,两直角边长AC=6 cm,BC=8 cm,将△ABC折叠,使点B与点A重合,折痕为DE,则CD等于( )
两圆的半径分别为2和5,圆心距为7,则这两圆的位置关系为
How old ____ (be) your parents?
关于下列四幅图的说法正确的是( )