A:中心地级别越高,提供职能种类越少
B:中心地级别越低,中心地服务的范围越大
C:中心地级别越高,门槛人口越高
D:中心地级别越低,中心地数目越少,中心地平均距离越近
⑴____ cloud mountain
⑵____ how grow
⑶____ cow out
⑷____ playground mouse
⑸____ know mouth
是数字2的可能性是____
数字是双数的可能性是____
数字是单数的可能性是____
选出恰当的应答语。
A.There was no computer room.
B.I looked it up on the Internet.
C.I went to Mountain Tai.
D.He tripped and fell in the race.
E.I went there by plane.
( 1 )____( 2 )____( 3 )____
( 4 )____( 5 )____