⑴____ A.book B.good C.look D.school
⑵____ A.student B.Tuesday C.June D.useful
⑶____ A.bread B.speak C.teacher D.eat
⑷____ A.orange B.geography C.big D.vegetable
⑸____ A.thank B.that C.brother D.those
如图⊙P经过点A(0,3)、O(0,0)、B(1,0),点C在第一象限的上,则∠BCO的度数为( )
某物理实验小组的同学在探究物体所受重力大小与物体质量的关系时,实验数据记录如下表:
被测物体
质量m(kg)
重力G(N)
比值Gm(N/kg)
比值Gm的平均值(N/kg)
物体1
0.1
0.99
9.9
物体2
0.2
1.96
9.8
物体3
0.3
2.91
9.7
______ his pocket money, Bill bought many books for the poor children.