A:0
B:-3
C:1
D:-1
Will you __________ to my office now?
— He plans to give a speech to raise food and clothes for the disabled next month.
— That’s great. I also want to help those children_________.
一个梯形,上底是2.4分米,下底是3.6分米,高是1.5分米,这个梯形的面积是____平方分米