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一、根据上下文,完成下列对话.
A:Where( )you last week?
B:I( )on a farm ( )my family.
A:What( )you do on the farm?
B:We( )trees and( )up carrots.
A:What( )did you do?
B:We( )cows.It( )fun!
A:Wonderful!I( )to go to the farm,too.
二、修筑一条水泥路,甲队独修需12天完成,乙队独修需15天完成,乙队先做全程的1/10,剩下的由甲、乙合做,还需多少天就能完工?
人气:215 ℃ 时间:2020-03-27 14:58:22
解答
A:Where(were )you last week?
B:I( was)on a farm (with )my family.
A:What( did)you do on the farm?
B:We(planted )trees and(dig )up carrots.
A:What( else )did you do?
B:We( feeded )cows.It(was )fun!
A:Wonderful!I( want )to go to the farm,too.
二、修筑一条水泥路,甲队独修需12天完成,乙队独修需15天完成,乙队先做全程的1/10,剩下的由甲、乙合做,还需多少天就能完工?
甲队的工效:1/12,乙队的工效:1/15
(1-1/10)÷(1/12+1/15)=6
答 :6天
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