一个零件长10毫米,画在图上长5厘米,这幅图的比例尺是1:5.______.(判断对错)
5厘米=50毫米,
50毫米:10毫米=5:1;
答:这幅图的比例尺是5:1.
故答案为:×.
Mary hasn't been to London. I haven't . [ ]
A.also
B.either
C.too
D.already
_____ Li Ming and Jenny children? [ ]
A. Are
B. Is
C. Do
D. Does