1.如图,∠1和∠2是同位角的是( )

| A. | (1)(2)(3) | B. | (2)(3)(4) | C. | (3)(4)(5) | D. | (1)(2)(5) |
19.
如图,将周长为8的△ABC沿BC方向向右平移1个单位得到△DEF,则四边形ABFD的周长为( )
| A. | 11 | B. | 10 | C. | 9 | D. | 8 |
18.
如图,10块相同的长方形墙砖拼成一个矩形,设长方形墙砖的长和宽分别为x厘米和y厘米,则依题意列方程组正确的是( )
| A. | $\left\{\begin{array}{l}{x+2y=75}\\{y=3x}\end{array}\right.$ | B. | $\left\{\begin{array}{l}{2x+y=75}\\{x=3y}\end{array}\right.$ | C. | $\left\{\begin{array}{l}{2x+y=75}\\{y=3x}\end{array}\right.$ | D. | $\left\{\begin{array}{l}{x+2y=75}\\{x=3y}\end{array}\right.$ |
17.
小邢到单位附近的加油站加油,如图是小邢所用的加油机上的数据显示牌,则数据中的变量是( )
0 294988 294996 295002 295006 295012 295014 295018 295024 295026 295032 295038 295042 295044 295048 295054 295056 295062 295066 295068 295072 295074 295078 295080 295082 295083 295084 295086 295087 295088 295090 295092 295096 295098 295102 295104 295108 295114 295116 295122 295126 295128 295132 295138 295144 295146 295152 295156 295158 295164 295168 295174 295182 366461
| A. | 金额 | B. | 数量 | C. | 单价 | D. | 金额和数量 |