从下列方框中选出适当的答语。
A．She's sending her grandpa an e-mail．
B．I usually do my homework．
C．Because I can plant trees．
D．June．He can go swimming with his friend．
E．It's in September or October．
被称为“地球之肺”的是（ ）
对于条件：①两条直角边对应相等；②斜边和一锐角对应相等；③斜边和一直角边对应相等；④直角边和一锐角对应相等；以上能断定两直角三角形全等的有（ ）
按要求操作。
把长方形向上平移2格，把三角形向右平移3格，把平行四边形向左平移5格。
