A:①②
B:②③
C:③④
D:①④
甲、乙两车从A地块往B地,甲每小时行60千米,乙每小时行80千米.甲出发2小时后,乙沿着甲的路线行驶开始追甲,几小时后能追上?
biē qì
wéi dú
sāi bāng zi
mǔ zhǐ
____
wò quán
chǎn xiàn
zuàn jiǎo zi
gān gà
by post,one of,go out,pay over the Internet,one day