油区周围必须有()行驶的通道,并经常保持畅通。
A.一般汽车
B.消防车
C.油车
参考答案:B
下面不一定是对称图形的是[ ]
A.平行四边形
B.等腰梯形
C.长方形
Simon is his English book, but he can’t _______ it.
A.looking for, find
B.finding, look for
C.looking after, look for
D.looking at, find