一条公路长20米,每隔5米栽一棵树(两头都栽),公路两旁一共要栽多少棵树?
20÷5+1=5(棵),5×2=l0(棵)
读某地气候资料表,完成1-2题。
1.该地气温年较差是[ ]
A.15℃
B.16℃
C.17℃
D.18℃
2.该地年降水量是 [ ]
A.520毫米
B.538毫米
C.600毫米
D.536毫米
When people started questioning his explanation,he had to______ more details. [ ]
A. make of
B. make for
C. make up
D. make into