拖拉机是通过（）将动力传递到农具上以组成不同的作业组。
参考答案：动力输出油
24．____, the disaster in Haiti shows once again that even among the worst, there is always hope．
A．As sad it is
B．It is as sad
C．Sad as it is
D．Sad as is it
现行实施义务教育的普通学校应当接收具有接受普通教育能力的残疾适龄儿童、少年（）。
A.单独开班
B.随班就读
C.混合编班
D.均分到班
