500g是1kg的( )%.
A.0.5
B.12.5
C.50
D.500
1kg=1000g
500÷1000=0.5=50%
答:500g是1kg的50%.
故选:C.
There are quite a few old books on the shelf, but _____ of them is useful to teenagers.
A.both
B.all
C.neither
D.none
哪个民族每年秋季,家家都酿酒,所用原料除玉米、高梁外,还喜用稗子,并以稗子酒最好?()
A.满族
B.蒙古族
C.朝鲜族
D.傈僳族