军军去年体重30千克,今年增加到36千克,增加了百分之几?
(36-30)÷30,
=6÷30,
=15,
=20%;
答:增加了20%.
– What’s Joan dong? -- ______ newspapers in the room.
A.She reading
B.She reads
C.To read
D.Reading
一炉钢水的浇注时间与()无直接关系。
A.二冷水量
B.出钢量
C.拉速